Converting a Metabolights study to W4M format fails

Error when trying to convert Metabolights study MTBLS174 to W4M format with "ISA to W4M" tool:

   Traceback (most recent call last):
|   File "/shared/mfs/data/galaxy/mutable-data/shed_tools/toolshed.g2.bx.psu.edu/repos/prog/isa2w4m/1883d5274962/isa2w4m/isa2w4m.py", line 8, in <module>
|   isatab2w4m.main()
|   File "/shared/mfs/data/galaxy/mutable-data/dependencies/_conda/envs/__isatools@0.10.3/lib/python3.8/site-packages/isatools/convert/isatab2w4m.py", line 569, in main
|   convert(input_dir           = args_dict['input_dir'],
|   File "/shared/mfs/data/galaxy/mutable-data/dependencies/_conda/envs/__isatools@0.10.3/lib/python3.8/site-packages/isatools/convert/isatab2w4m.py", line 548, in convert
|   assays = convert2w4m(input_dir      = input_dir,
|   File "/shared/mfs/data/galaxy/mutable-data/dependencies/_conda/envs/__isatools@0.10.3/lib/python3.8/site-packages/isatools/convert/isatab2w4m.py", line 458, in convert2w4m
|   variable_names = make_variable_names(measures_df)
|   File "/shared/mfs/data/galaxy/mutable-data/dependencies/_conda/envs/__isatools@0.10.3/lib/python3.8/site-packages/isatools/convert/isatab2w4m.py", line 295, in make_variable_names
|   if assay_df.keys().contains(col):
|   AttributeError: 'Index' object has no attribute 'contains'