Not working with long reads only

The pipeline does not work for long read sequencing assembly only. Reproduce the issue using the sample data:

Delete the entries of the fastq.gz files under "short1" and "short2" in the sample.tsv and run the pipeline with the --no-short option.

Error: With the --no-short option enabled, the pipeline still checks the presence of the "short1" and "short2" columns and also the accessibility of linked fastq.gz files which should both not be done. The pipeline runs successfully with the sample data and --no-short option if some real files are provided in the "short1" and "short2" columns (although not used afterwards).