PsychoPy encountered an unhandled internal error

OS : Ubuntu 20.04.1
PsychoPy version : v2020.2.10
**Standard Standalone? ** y
What are you trying to achieve?:
I am trying to run an experiment created on another machine with ubuntu 18.04 on a PC with ubuntu 20.04

What did you try to make it work?:
I tried to change the psychopy version on experiment settings

What specifically went wrong when you tried that?: Nothing changed
Traceback (most recent call last):
File “/usr/local/lib/python3.8/dist-packages/psychopy/app/runner/runner.py”, line 731, in onItemSelected
self.updateAlerts()
File “/usr/local/lib/python3.8/dist-packages/psychopy/app/runner/runner.py”, line 752, in updateAlerts
self.currentExperiment.integrityCheck()
File “/usr/local/lib/python3.8/dist-packages/psychopy/experiment/_experiment.py”, line 154, in integrityCheck
self.flow.integrityCheck()
File “/usr/local/lib/python3.8/dist-packages/psychopy/experiment/flow.py”, line 124, in integrityCheck
entry.integrityCheck()
File “/usr/local/lib/python3.8/dist-packages/psychopy/experiment/routine.py”, line 52, in integrityCheck
entry.integrityCheck()
File “/usr/local/lib/python3.8/dist-packages/psychopy/experiment/components/_base.py”, line 669, in integrityCheck
win = alerttools.TestWin(self.exp)
File “/usr/local/lib/python3.8/dist-packages/psychopy/alerts/alerttools.py”, line 17, in init
self.monitor = self.exp.settings.monitor
File “/usr/local/lib/python3.8/dist-packages/psychopy/experiment/components/settings/init.py”, line 901, in monitor
self._monitor = Monitor(self.params[‘Monitor’].val)
File “/usr/local/lib/python3.8/dist-packages/psychopy/monitors/calibTools.py”, line 126, in init
self._loadAll()
File “/usr/local/lib/python3.8/dist-packages/psychopy/monitors/calibTools.py”, line 445, in _loadAll
self.calibs = json_tricks.load(thisFile, ignore_comments=False,
File “/usr/local/lib/python3.8/dist-packages/json_tricks/nonp.py”, line 266, in load
return loads(string, preserve_order=preserve_order, ignore_comments=ignore_comments, decompression=decompression,
File “/usr/local/lib/python3.8/dist-packages/json_tricks/nonp.py”, line 236, in loads
return json_loads(string, object_pairs_hook=hook, **jsonkwargs)
File “/usr/lib/python3.8/json/init.py”, line 370, in loads
return cls(**kw).decode(s)
File “/usr/lib/python3.8/json/decoder.py”, line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File “/usr/lib/python3.8/json/decoder.py”, line 355, in raw_decode
raise JSONDecodeError(“Expecting value”, s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)