Error generated by large NLO samples

Dear expert,

MG version: MG5_aMC_v3_3_1

When I generate 10k events at NLO using re-weighting, everything works perfectly fine, but when I tried to generate 500k events a got the following error:

vim ME5_debug
==================
File "/AtlasDisk/user/tnourji/NLO_LO_PShower/MG5_aMC_v3_3_1/NLO_Shower_SMEFT/ctg/ctg_NLO_SMEFT/bin/internal/common_run_interface.py", line 2193, in do_reweight raise Exception("Some of the run failed: Please read %s_%s_debug.log" % (f, self.run_tag))
Exception: Some of the run failed: Please read /AtlasDisk/user/tnourji/NLO_LO_PShower/MG5_aMC_v3_3_1/NLO_Shower_SMEFT/ctg/ctg_NLO_SMEFT/Events/run_02/events.lhe.gz_2.lhe_tag_1_debug.log
==================

Please find below the link to the log and summary file :
events.lhe.gz_2.lhe_tag_1_debug.log : https://cernbox.cern.ch/index.php/s/CPM2D7xnThGztzu
summary: https://cernbox.cern.ch/index.php/s/XvZDsiGDAwdmC9F

Reweight_card.dat card:
=======================================
change mode NLO # Define type of Reweighting. For LO sample this command
                   # has no effect since only "LO" mode is allowed.
change helicity False
# SPECIFY A PATH OR USE THE SET COMMAND LIKE THIS:
# set sminputs 1 130 # modify 1/alpha_EW
launch --rwgt_name=ctg_neg_1_5
  set DIM62F 24 -1.5
launch --rwgt_name=ctg_neg_1_2
  set DIM62F 24 -1.2
launch --rwgt_name=ctg_neg_1
  set DIM62F 24 -1
launch --rwgt_name=ctg_neg_0_5
  set DIM62F 24 -0.5
launch --rwgt_name=ctg_neg_0_2
  set DIM62F 24 -0.2
launch --rwgt_name=ctg_neg_0_09
  set DIM62F 24 -0.09
launch --rwgt_name=ctg_neg_0
  set DIM62F 24 0
launch --rwgt_name=ctg_0_09
  set DIM62F 24 0.09
launch --rwgt_name=ctg_0_2
  set DIM62F 24 0.2
launch --rwgt_name=ctg_0_5
  set DIM62F 24 0.5
launch --rwgt_name=ctg_1
  set DIM62F 24 1
launch --rwgt_name=ctg_1_2
  set DIM62F 24 1.2
=======================================

proc_card.dat

=======================================
import model SMEFTatNLO-NLO_ctg

generate p p > t t~ QED=0 QCD=2 NP=2 [QCD]
output ctg_NLO_SMEFT
=======================================

Your feedback will be of great assistance.

Best,
A.TNOURJI