step 11: ValueError: need more than 1 value to unpack

[NA1919]

hello,

I am running panX with branch associations. I have a metadata.tsv file and a descriptive metainfo.tsv file.
I keep getting this error on step 11:

/beegfs/work/workspace/ws/fr_na50-panx-0/pan-genome-analysis/scripts/sf_association.py:188: RuntimeWarning: divide by zero encountered in divide
*((root_node.meta_sq_value - n.meta_sq_value)/n_non_child
/beegfs/work/workspace/ws/fr_na50-panx-0/pan-genome-analysis/scripts/sf_association.py:189: RuntimeWarning: invalid value encountered in double_scalars

• n.meta_ancestral_average**2)
  /beegfs/work/workspace/ws/fr_na50-panx-0/pan-genome-analysis/scripts/sf_association.py:200: RuntimeWarning: invalid value encountered in sqrt
  np.sqrt(n.meta_ancestral_SSEM + n.meta_derived_SSEM)
  /beegfs/work/workspace/ws/fr_na50-panx-0/pan-genome-analysis/scripts/sf_association.py:272: RuntimeWarning: invalid value encountered in absolute
  association_dict[clusterID][d["meta_category"]] = np.abs(score)
  Traceback (most recent call last):
  File "./panX.py", line 329, in
  myPangenome.export_coreTree_json()
  File "/beegfs/work/workspace/ws/fr_na50-panx-0/pan-genome-analysis/scripts/pangenome_computation.py", line 229, in export_coreTree_json
  json_parser(self.path, self.folders_dict, self.fpaths_dict, self.metainfo_fpath, self.meta_data_config, self.clean_temporary_files)
  File "/beegfs/work/workspace/ws/fr_na50-panx-0/pan-genome-analysis/scripts/sf_coreTree_json.py", line 264, in json_parser
  process_metajson(path, meta_data_config, metajson_dict)
  File "/beegfs/work/workspace/ws/fr_na50-panx-0/pan-genome-analysis/scripts/sf_coreTree_json.py", line 173, in process_metajson
  meta_category, data_type, display, associate= iline.rstrip().split('\t')[:4]
  ValueError: need more than 1 value to unpack

thank you in advance for any help
Nurper