Error "expected str, bytes or os.PathLike object, not list" for harmony request

[hazemmahmoudnasa]

https://harmony.uat.earthdata.nasa.gov/C1256588789-ASDC_DEV2/ogc-api-coverages/1.0.0/collections/parameter_vars/coverage/rangeset?forceAsync=true&granuleId=G1269242639-ASDC_DEV2%2CG1269374306-ASDC_DEV2&variable=ztoa_net_all_mon&skipPreview=true

I just tested net2cog on UAT and came across this failure: https://harmony.uat.earthdata.nasa.gov/logs/7b216437-8877-4e87-b0ab-a248659ed9d3/4833911
"ERROR:root:expected str, bytes or os.PathLike object, not list\r\nTraceback (most recent call last):\r\n File "/home/dockeruser/.local/lib/python3.10/site-packages/harmony/cli.py", line 244, in _invoke\r\n (out_message, stac_output) = adapter.invoke()\r\n File "/home/dockeruser/.local/lib/python3.10/site-packages/harmony/adapter.py", line 121, in invoke\r\n return (self.message, self._process_catalog_recursive(self.catalog))\r\n File "/home/dockeruser/.local/lib/python3.10/site-packages/harmony/adapter.py", line 186, in _process_catalog_recursive\r\n output_item = self.process_item(item.clone(), source)\r\n File "/worker/net2cog/netcdf_convert_harmony.py", line 109, in process_item\r\n staged_filename = os.path.basename(cog_generated)\r\n File "/usr/local/lib/python3.10/posixpath.py", line 142, in basename\r\n p = os.fspath(p)\r\nTypeError: expected str, bytes or os.PathLike object, not list\r\n",
"{"message": "timing./home/dockeruser/.local/bin/net2cog_harmony.end", "user": "hazem.mahmoud88", "requestId": "7b216437-8877-4e87-b0ab-a248659ed9d3", "durationMs": 60681, "timestamp": "2024-09-17T16:02:20.789568Z", "level": "INFO", "application": "/home/dockeruser/.local/bin/net2cog_harmony"}\r\nTraceback (most recent call last):\r\n File "/home/dockeruser/.local/bin/net2cog_harmony", line 8, in \u003Cmodule\u003E\r\n",
" sys.exit(main())\r\n File "/worker/net2cog/netcdf_convert_harmony.py", line 144, in main\r\n",