[ERROR  ]         multiqc : Oops! The 'custom_content' MultiQC module broke...
  Please copy the following traceback and report it at https://github.com/ewels/MultiQC/issues
  If possible, please include a log file that triggers the error - the last file found was:
    None
============================================================
Module custom_content raised an exception: Traceback (most recent call last):
  File "/camp/stp/babs/working/patelh/code/nextflow/nfcore_pr/chipseq/work/conda/nf-core-chipseq-1.0dev-864c70649769a2aaa76e0a039970f70e/bin/multiqc", line 440, i
n multiqc
    output = mod()
  File "/camp/stp/babs/working/patelh/code/nextflow/nfcore_pr/chipseq/work/conda/nf-core-chipseq-1.0dev-864c70649769a2aaa76e0a039970f70e/lib/python2.7/site-packag
es/multiqc/modules/custom_content/custom_content.py", line 40, in custom_module_classes
    for k,f in config_data.items():
AttributeError: 'NoneType' object has no attribute 'items'