"cluster.get_job_identifier runs unexpectedly" and "UnboundLocalError : local variable 'error' referenced before assignment" when running systematics on SLURM cluster

Dear MG5 experts,

I tried to run different processes (Zjj, W+photon, ...) on the Lemaitre3 cluster at LO in the SM, but when I ask for the systematics (use_syst=True in run_card), the computation stops with this message:

INFO: Running Systematics computation
ESC[1;34mWARNING: cluster.get_job_identifier runs unexpectedly. This should be fine but report this message if you have problem. ESC[0m
Start waiting for update. (more info in debug mode)
ESC[1;34mWARNING: cluster.get_job_identifier runs unexpectedly. This should be fine but report this message if you have problem. ESC[0m
ESC[1;34mWARNING: cluster.get_job_identifier runs unexpectedly. This should be fine but report this message if you have problem. ESC[0m
ESC[1;34mWARNING: cluster.get_job_identifier runs unexpectedly. This should be fine but report this message if you have problem. ESC[0m
ESC[1;34mWARNING: cluster.get_job_identifier runs unexpectedly. This should be fine but report this message if you have problem. ESC[0m
ESC[1;31mCommand "generate_events run_01" interrupted with error:
UnboundLocalError : local variable 'error' referenced before assignment
Please report this bug on https://bugs.launchpad.net/mg5amcnlo
More information is found in '/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/bin/pp_lva/sm_lo/run_01_tag_1_debug.log'.
Please attach this file to your report.ESC[0m
INFO: storing files of previous run
INFO: Done
INFO:
INFO:
quit
INFO:
quit

I'm not sure if this is a problem of modules I didn't load (only one I asked for is Python3), or else: can you please give me your opinion?
You can find the log file below.

Cheers,

Matteo

generate_events run_01
Traceback (most recent call last):
  File "/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/madgraph/interface/extended_cmd.py", line 1544, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/madgraph/interface/extended_cmd.py", line 1493, in onecmd_orig
    return func(arg, **opt)
  File "/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/madgraph/interface/madevent_interface.py", line 2404, in do_generate_events
    self.run_generate_events(switch_mode, args)
  File "/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/madgraph/interface/common_run_interface.py", line 7634, in new_fct
    original_fct(obj, *args, **opts)
  File "/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/madgraph/interface/madevent_interface.py", line 2641, in run_generate_events
    self.exec_cmd('systematics %s %s ' % (self.run_name,
  File "/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/madgraph/interface/extended_cmd.py", line 1573, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
  File "/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/madgraph/interface/extended_cmd.py", line 1493, in onecmd_orig
    return func(arg, **opt)
  File "/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/madgraph/interface/common_run_interface.py", line 1919, in do_systematics
    self.cluster.cluster_submit(prog, argument,
  File "/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/madgraph/various/cluster.py", line 211, in cluster_submit
    id = self.submit2(prog, argument, cwd, stdout, stderr, log, input_files,
  File "/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/madgraph/various/cluster.py", line 75, in deco_f_store
    id = f(self, **args)
  File "/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/madgraph/various/cluster.py", line 149, in submit2
    return self.submit(prog, argument, cwd, stdout, stderr, log,
  File "/home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/madgraph/various/misc.py", line 439, in deco_f_retry
    raise my_error.__class__('[Fail %i times] \n %s ' % (i+1, error))
UnboundLocalError: local variable 'error' referenced before assignment
                              Run Options
                              -----------
               stdout_level : 20 (user set)

                         MadEvent Options
                         ----------------
     automatic_html_opening : False (user set)
        notification_center : True
                   run_mode : 1 (user set)
              cluster_queue : None (user set)
               cluster_time : None (user set)
               cluster_size : 150 (user set)
             cluster_memory : 150 (user set)
                    nb_core : 5 (user set)
          cluster_temp_path : None

                      Configuration Options
                      ---------------------
               pythia8_path : /home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/HEPTools/pythia8 (user set)
                  hwpp_path : /home/users/m/m/mmaltoni/Herwig7 (user set)
                thepeg_path : /home/users/m/m/mmaltoni/Herwig7 (user set)
                 hepmc_path : /home/users/m/m/mmaltoni/Herwig7 (user set)
           madanalysis_path : None (user set)
          madanalysis5_path : None (user set)
            pythia-pgs_path : None (user set)
                    td_path : None (user set)
               delphes_path : None (user set)
        exrootanalysis_path : None (user set)
               syscalc_path : None (user set)
                 rivet_path : None
                  yoda_path : None
                     lhapdf : /home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/HEPTools/lhapdf6_py3/bin/lhapdf-config (user set)
                 lhapdf_py2 : None
                 lhapdf_py3 : /home/users/m/m/mmaltoni/MG5_aMC_v3_4_2/HEPTools/lhapdf6_py3/bin/lhapdf-config (user set)
                    timeout : 60
              f2py_compiler : None
          f2py_compiler_py2 : None
          f2py_compiler_py3 : None
                web_browser : None
                 eps_viewer : None
                text_editor : None
           fortran_compiler : None
               cpp_compiler : None
                auto_update : 7 (user set)
               cluster_type : slurm (user set)
      cluster_status_update : (900, 60) (user set)
           cluster_nb_retry : 1
         cluster_local_path : None
         cluster_retry_wait : 1500 (user set)
#************************************************************
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 3.4.2 2023-01-20 *
#* *
#* The MadGraph5_aMC@NLO Development Team - Find us at *
#* https://server06.fynu.ucl.ac.be/projects/madgraph *
#* *
#************************************************************
#* *
#* Command File for MadGraph5_aMC@NLO *
#* *
#* run as ./bin/mg5_aMC filename *
#* *
#************************************************************
set group_subprocesses Auto
set ignore_six_quark_processes False
set low_mem_multicore_nlo_generation False
set complex_mass_scheme False
set include_lepton_initiated_processes False
set gauge unitary
set loop_optimized_output True
set loop_color_flows False
set max_npoint_for_channel 0
set default_unset_couplings 99
set max_t_for_channel 99
set zerowidth_tchannel True
set nlo_mixed_expansion True
import model sm
define p = g u c d s u~ c~ d~ s~
define j = g u c d s u~ c~ d~ s~
define l+ = e+ mu+
define l- = e- mu-
define vl = ve vm vt
define vl~ = ve~ vm~ vt~
import model SMEFTatNLO-loopWWW
define p = 21 2 4 1 3 -2 -4 -1 -3 5 -5 # pass to 5 flavors
define j = p
generate p p > l+ vl a QCD=0 QED=3 NP=0 @0
add process p p > l- vl~ a QCD=0 QED=3 NP=0 @1
output pp_lva/sm_lo
######################################################################
## PARAM_CARD AUTOMATICALY GENERATED BY MG5 ####
######################################################################
###################################
## INFORMATION FOR DIM6
###################################
BLOCK DIM6 #
      1 1.100000e+03 # lambda
      6 1.100000e+00 # cwww
###################################
## INFORMATION FOR MASS
###################################
BLOCK MASS #
      6 1.720000e+02 # mt
      23 9.118760e+01 # mz
      24 7.982440e+01 # mw
      25 1.250000e+02 # mh
      1 0.000000e+00 # d : 0.0
      2 0.000000e+00 # u : 0.0
      3 0.000000e+00 # s : 0.0
      4 0.000000e+00 # c : 0.0
      5 0.000000e+00 # b : 0.0
      11 0.000000e+00 # e- : 0.0
      12 0.000000e+00 # ve : 0.0
      13 0.000000e+00 # mu- : 0.0
      14 0.000000e+00 # vm : 0.0
      15 0.000000e+00 # ta- : 0.0
      16 0.000000e+00 # vt : 0.0
      21 0.000000e+00 # g : 0.0
      22 0.000000e+00 # a : 0.0
      9000002 9.118760e+01 # ghz : mz
      9000003 7.982440e+01 # ghwp : mw
      9000004 7.982440e+01 # ghwm : mw
###################################
## INFORMATION FOR RENOR
###################################
BLOCK RENOR #
      1 9.118800e+01 # mueft
###################################
## INFORMATION FOR SMINPUTS
###################################
BLOCK SMINPUTS #
      2 1.166370e-05 # gf
      3 1.180023e-01 # as (note that parameter not used if you use a pdf set)
###################################
## INFORMATION FOR YUKAWA
###################################
BLOCK YUKAWA #
      6 1.720000e+02 # ymt
###################################
## INFORMATION FOR DECAY
###################################
DECAY 6 1.470800e+00 # wt
DECAY 23 2.416023e+00 # wz
DECAY 24 2.002950e+00 # ww
DECAY 25 4.088000e-03 # wh
DECAY 1 0.000000e+00 # d : 0.0
DECAY 2 0.000000e+00 # u : 0.0
DECAY 3 0.000000e+00 # s : 0.0
DECAY 4 0.000000e+00 # c : 0.0
DECAY 5 0.000000e+00 # b : 0.0
DECAY 11 0.000000e+00 # e- : 0.0
DECAY 12 0.000000e+00 # ve : 0.0
DECAY 13 0.000000e+00 # mu- : 0.0
DECAY 14 0.000000e+00 # vm : 0.0
DECAY 15 0.000000e+00 # ta- : 0.0
DECAY 16 0.000000e+00 # vt : 0.0
DECAY 21 0.000000e+00 # g : 0.0
DECAY 22 0.000000e+00 # a : 0.0
DECAY 9000002 2.416023e+00 # ghz : wz
DECAY 9000003 2.002950e+00 # ghwp : ww
DECAY 9000004 2.002950e+00 # ghwm : ww
###################################
## INFORMATION FOR QNUMBERS 9000001
###################################
BLOCK QNUMBERS 9000001 # gha
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 9000002
###################################
BLOCK QNUMBERS 9000002 # ghz
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 9000003
###################################
BLOCK QNUMBERS 9000003 # ghwp
      1 3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 9000004
###################################
BLOCK QNUMBERS 9000004 # ghwm
      1 -3 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 1 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)
###################################
## INFORMATION FOR QNUMBERS 9000005
###################################
BLOCK QNUMBERS 9000005 # ghg
      1 0 # 3 times electric charge
      2 1 # number of spin states (2s+1)
      3 8 # colour rep (1: singlet, 3: triplet, 8: octet)
      4 1 # particle/antiparticle distinction (0=own anti)

#*********************************************************************
# MadGraph5_aMC@NLO *
# *
# run_card.dat MadEvent *
# *
# This file is used to set the parameters of the run. *
# *
# Some notation/conventions: *
# *
# Lines starting with a '# ' are info or comments *
# *
# mind the format: value = variable ! comment *
# *
# To display more options, you can type the command: *
# update to_full *
#*********************************************************************
#
#*********************************************************************
# Tag name for the run (one word) *
#*********************************************************************
  tag_1 = run_tag ! name of the run
#*********************************************************************
# Number of events and rnd seed *
# Warning: Do not generate more than 1M events in a single run *
#*********************************************************************
  100000 = nevents ! Number of unweighted events requested
  0 = iseed ! rnd seed (0=assigned automatically=default))
#*********************************************************************
# Collider type and energy *
# lpp: 0=No PDF, 1=proton, -1=antiproton, 2=elastic photon of proton,*
# +/-3=PDF of electron/positron beam *
# +/-4=PDF of muon/antimuon beam *
#*********************************************************************
  1 = lpp1 ! beam 1 type
  1 = lpp2 ! beam 2 type
  6500.0 = ebeam1 ! beam 1 total energy in GeV
  6500.0 = ebeam2 ! beam 2 total energy in GeV
# To see polarised beam options: type "update beam_pol"

#*********************************************************************
# PDF CHOICE: this automatically fixes alpha_s and its evol. *
# pdlabel: lhapdf=LHAPDF (installation needed) [1412.7420] *
# iww=Improved Weizsaecker-Williams Approx.[hep-ph/9310350] *
# eva=Effective W/Z/A Approx. [21yy.zzzzz] *
# none=No PDF, same as lhapdf with lppx=0 *
#*********************************************************************
  lhapdf = pdlabel ! PDF set
  260000 = lhaid ! if pdlabel=lhapdf, this is the lhapdf number
# To see heavy ion options: type "update ion_pdf"
#*********************************************************************
# Renormalization and factorization scales *
#*********************************************************************
  False = fixed_ren_scale ! if .true. use fixed ren scale
  False = fixed_fac_scale ! if .true. use fixed fac scale
  91.188 = scale ! fixed ren scale
  91.188 = dsqrt_q2fact1 ! fixed fact scale for pdf1
  91.188 = dsqrt_q2fact2 ! fixed fact scale for pdf2
  3 = dynamical_scale_choice ! Choose one of the preselected dynamical choices
  1.0 = scalefact ! scale factor for event-by-event scales

#*********************************************************************
# Type and output format
#*********************************************************************
  False = gridpack !True = setting up the grid pack
  -1.0 = time_of_flight ! threshold (in mm) below which the invariant livetime is not written (-1 means not written)
  average = event_norm ! average/sum. Normalization of the weight in the LHEF
#*********************************************************************
# Matching parameter (MLM only)
#*********************************************************************
 1 = ickkw ! 0 no matching, 1 MLM
 1.0 = alpsfact ! scale factor for QCD emission vx
 False = chcluster ! cluster only according to channel diag
 5 = asrwgtflavor ! highest quark flavor for a_s reweight
 True = auto_ptj_mjj ! Automatic setting of ptj and mjj if xqcut >0
                                   ! (turn off for VBF and single top processes)
 1.0 = xqcut ! minimum kt jet measure between partons

#*********************************************************************
#
#*********************************************************************
# Phase-Space Optimization strategy (basic options)
#*********************************************************************
  0 = nhel ! using helicities importance sampling or not.
                             ! 0: sum over helicity, 1: importance sampling
  2 = sde_strategy ! default integration strategy (hep-ph/2021.00773)
                             ! 1 is old strategy (using amp square)
        ! 2 is new strategy (using only the denominator)
# To see advanced option for Phase-Space optimization: type "update psoptim"
#*********************************************************************
# Generation bias, check the wiki page below for more information: *
# 'cp3.irmp.ucl.ac.be/projects/madgraph/wiki/LOEventGenerationBias' *
#*********************************************************************
  None = bias_module ! Bias type of bias, [None, ptj_bias, -custom_folder-]
  {} = bias_parameters ! Specifies the parameters of the module.
#
#*******************************
# Parton level cuts definition *
#*******************************
  0.0 = dsqrt_shat ! minimal shat for full process
#
#
#*********************************************************************
# BW cutoff (M+/-bwcutoff*Gamma) ! Define on/off-shell for "$" and decay
#*********************************************************************
  15.0 = bwcutoff ! (M+/-bwcutoff*Gamma)
#*********************************************************************
# Standard Cuts *
#*********************************************************************
# Minimum and maximum pt's (for max, -1 means no cut) *
#*********************************************************************
  150.0 = pta ! minimum pt for the photons
  80.0 = ptl ! minimum pt for the charged leptons
  40.0 = misset ! minimum missing Et (sum of neutrino's momenta)
  -1.0 = ptamax ! maximum pt for the photons
  -1.0 = ptlmax ! maximum pt for the charged leptons
  -1.0 = missetmax ! maximum missing Et (sum of neutrino's momenta)
  {} = pt_min_pdg ! pt cut for other particles (use pdg code). Applied on particle and anti-particle
  {} = pt_max_pdg ! pt cut for other particles (syntax e.g. {6: 100, 25: 50})
#
# For display option for energy cut in the partonic center of mass frame type 'update ecut'
#
#*********************************************************************
# Maximum and minimum absolute rapidity (for max, -1 means no cut) *
#*********************************************************************
  2.5 = etaa ! max rap for the photons
  2.5 = etal ! max rap for the charged leptons
  0.0 = etajmin ! min rap for the jets
  0.0 = etaamin ! min rap for the photons
  0.0 = etalmin ! main rap for the charged leptons
  {} = eta_min_pdg ! rap cut for other particles (use pdg code). Applied on particle and anti-particle
  {} = eta_max_pdg ! rap cut for other particles (syntax e.g. {6: 2.5, 23: 5})
#*********************************************************************
# Minimum and maximum DeltaR distance *
#*********************************************************************
  0.7 = dral ! min distance between gamma and lepton
  -1.0 = dralmax ! maxdistance between gamma and lepton
#*********************************************************************
# Minimum and maximum invariant mass for pairs *
#*********************************************************************
  {} = mxx_min_pdg ! min invariant mass of a pair of particles X/X~ (e.g. {6:250})
  {'default': False} = mxx_only_part_antipart ! if True the invariant mass is applied only
                       ! to pairs of particle/antiparticle and not to pairs of the same pdg codes.
 #*********************************************************************
 # Minimum and maximum invariant mass for all letpons *
 #*********************************************************************
  0.0 = mmnl ! min invariant mass for all letpons (l+- and vl)
  -1.0 = mmnlmax ! max invariant mass for all letpons (l+- and vl)
 #*********************************************************************
 # Minimum and maximum pt for 4-momenta sum of leptons / neutrino *
 # for pair of lepton includes only same flavor, opposite charge
 #*********************************************************************
#*********************************************************************
# Inclusive cuts *
#*********************************************************************
#*********************************************************************
# maximal pdg code for quark to be considered as a light jet *
# (otherwise b cuts are applied) *
#*********************************************************************
  4 = maxjetflavor ! Maximum jet pdg code
#*********************************************************************
#
#*********************************************************************
# Store info for systematics studies *
# WARNING: Do not use for interference type of computation *
#*********************************************************************
  True = use_syst ! Enable systematics studies
#
  systematics = systematics_program ! none, systematics [python], SysCalc [depreceted, C++]
  ['--mur=0.5,1,2', '--muf=0.5,1,2', '--pdf=errorset'] = systematics_arguments ! see: https://cp3.irmp.ucl.ac.be/projects/madgraph/wiki/Systematics#Systematicspythonmodule