Facing problem in running Viralrecall

[vmevada102]

After installing into the Conda environment i am facing following problem,

Traceback (most recent call last): File "viralrecall.py", line 733, in status = main() File "viralrecall.py", line 728, in main run_program(input, project, database, window, phagesize, minscore, minhit, evalue, cpus, plotflag, redo, flanking, batch, summary_file, contiglevel) File "viralrecall.py", line 401, in run_program df = pandas.concat([df, s1], axis=1, sort=True) TypeError: concat() got an unexpected keyword argument 'sort'