Failed the initialization of loop-induced matrix element

Dear MG5 experts,

I am using the model DMsimp_s_spin0, and while trying to generate the process 'p p > xd xd~ j / h w+ w- z a [noborn=QCD]' I get the following error message in the debug.log file:

#************************************************************
#* MadGraph5_aMC@NLO/MadEvent *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 3.5.2 *
#* *
#* The MadGraph5_aMC@NLO Development Team - Find us at *
#* https://server06.fynu.ucl.ac.be/projects/madgraph *
#* *
#************************************************************
#* *
#* Command File for MadEvent *
#* *
#* run as ./bin/madevent.py filename *
#* *
#************************************************************
generate_events --multicore --nb_core=7
Traceback (most recent call last):
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/extended_cmd.py", line 1546, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/extended_cmd.py", line 1495, in onecmd_orig
    return func(arg, **opt)
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/madevent_interface.py", line 2403, in do_generate_events
    self.run_generate_events(switch_mode, args)
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/common_run_interface.py", line 7668, in new_fct
    original_fct(obj, *args, **opts)
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/madevent_interface.py", line 2597, in run_generate_events
    self.exec_cmd('survey %s %s' % (self.run_name,' '.join(args)),
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/extended_cmd.py", line 1575, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/extended_cmd.py", line 1495, in onecmd_orig
    return func(arg, **opt)
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/madevent_interface.py", line 3420, in do_survey
    self.configure_directory()
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/madevent_interface.py", line 5897, in configure_directory
    self.do_treatcards('')
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/madevent_interface.py", line 3397, in do_treatcards
    self.exec_cmd('initMadLoop -r -f')
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/extended_cmd.py", line 1575, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/extended_cmd.py", line 1495, in onecmd_orig
    return func(arg, **opt)
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/madevent_interface.py", line 2751, in do_initMadLoop
    MadLoopInitializer.init_MadLoop(self.me_dir,n_PS=options['nPS'],
  File "/home/camila/MonoXSMS/DMSimp_scalar_cms_single_extra_v2/bin/internal/madevent_interface.py", line 7324, in init_MadLoop
    raise MadGraph5Error('Failed the initialization of'+\
internal.MadGraph5Error: Failed the initialization of loop-induced matrix element 'PV0_0_1_gg_xdxdxg_no_hwpwpza' (trying with a maximum of 18 PS points).
                              Run Options
                              -----------
               stdout_level : None

                         MadEvent Options
                         ----------------
     automatic_html_opening : False (user set)
        notification_center : False (user set)
                   run_mode : 2
              cluster_queue : None
               cluster_time : None
               cluster_size : 100
             cluster_memory : None
                    nb_core : 7 (user set)
          cluster_temp_path : None

                      Configuration Options
                      ---------------------
               pythia8_path : /home/camila/MG5/HEPTools/pythia8 (user set)
                  hwpp_path : None (user set)
                thepeg_path : None (user set)
                 hepmc_path : None (user set)
           madanalysis_path : None (user set)
          madanalysis5_path : /home/camila/MG5/HEPTools/madanalysis5/madanalysis5 (user set)
            pythia-pgs_path : None (user set)
                    td_path : None (user set)
               delphes_path : /home/camila/MG5/Delphes (user set)
        exrootanalysis_path : /home/camila/MG5/ExRootAnalysis (user set)
               syscalc_path : None (user set)
                 rivet_path : None
                  yoda_path : None
                     lhapdf : /home/camila/MG5/HEPTools/lhapdf6_py3/bin/lhapdf-config (user set)
                 lhapdf_py2 : None
                 lhapdf_py3 : /home/camila/MG5/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 : gedit (user set)
           fortran_compiler : None
               cpp_compiler : None
                auto_update : 7 (user set)
               cluster_type : condor
      cluster_status_update : (600, 30)
           cluster_nb_retry : 1
         cluster_local_path : None
         cluster_retry_wait : 300

This error occurs specifically for mxd = 1.0 GeV and my0 = 750.0 GeV. I tried some of the solutions listed for this problem, but the error persists.

Cheers,
Camila