Uploading Tool to Galaxy

I’m currently trying to test a tool I have created on Galaxy using planemo. I created a conda package for it but it is not on bioconda or conda-forge; instead, its on my own personal profile. This conda package works as i want it to, but when I use planemo test on the tool wrapper file, I am not able to see the output file for the code. In fact, I get the following error from my failed test,

ERROR:galaxy.util:Error parsing file /private/var/folders/_d/0bgj5bq17cd1z3l9c9ztsyhm0000gr/T/tmpcn9wuvh4/job_working_directory/000/1/metadata/registry.xml
Traceback (most recent call last):
  File "/Users/pranhav/Documents/galaxy/lib/galaxy/util/__init__.py", line 348, in parse_xml
    tree = cast(ElementTree, etree.parse(str(fname), parser=parser))
  File "src/lxml/etree.pyx", line 3548, in lxml.etree.parse

Does anyone know why this may be occuring?