json.decoder.JSONDecodeError: Expecting value: line 1 column 854 (char 853)

[kingstonwa]

Trying to run Plexcleaner.py --test on my Qnap and getting the following error below. Any help is appreciated

Loading config file: /share/CACHEDEV1_DATA/Plexcleaner/Cleaner.conf
Traceback (most recent call last):
File "/share/CACHEDEV1_DATA/Plexcleaner/PlexCleaner.py", line 1063, in
options = json.loads(opt_string)
File "/opt/lib/python3.8/json/init.py", line 357, in loads
File "/opt/lib/python3.8/json/decoder.py", line 337, in decode
File "/opt/lib/python3.8/json/decoder.py", line 355, in raw_decode
json.decoder.JSONDecodeError: Expecting value: line 1 column 854 (char 853)

[kingstonwa]

Fyi contacted Qnap support and they said it was my config file and sure enough I replaced with an older backup and now everything works