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Problem with running experiment

Does anyone know what to do if the experiment won’t run? (I am using MacbookAir version 10.10.5 and the newest version of Psychopy)
This is the output i get:

Running: /Users/brynhilduryr/Documents/Sálfræðin/3.önn/Skyn- og hugfræði/
2019-09-11 13:58:33.617 python[2722:1483431] ApplePersistenceIgnoreState: Existing state will not be touched. New state will be written to /var/folders/rx/lt_1c9wd0_s9bk3_1s7cmpwh0000gn/T/org.psychopy.PsychoPy3.savedState
Traceback (most recent call last):
File “/Users/brynhilduryr/Documents/S\xe1lfr\xe6\xf0in/3.\xf6nn/Skyn- og hugfr\xe6\xf0i/”, line 62, in
File “/Applications/”, line 293, in init
self.monitor = monitors.Monitor(monitor, autoLog=autoLog)
File “/Applications/”, line 123, in init
File “/Applications/”, line 443, in _loadAll
encoding=‘utf-8’, preserve_order=False)
File “/Applications/”, line 225, in load
allow_duplicates=allow_duplicates, conv_str_byte=conv_str_byte, **jsonkwargs)
File “/Applications/”, line 201, in loads
return json_loads(string, object_pairs_hook=hook, **jsonkwargs)
File “json/init.pyc”, line 367, in loads
File “json/decoder.pyc”, line 339, in decode
File “json/decoder.pyc”, line 357, in raw_decode
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
Exception ignored in: <bound method Window.del of <psychopy.visual.window.Window object at 0x1188aa8d0>>
Traceback (most recent call last):
File “/Applications/”, line 501, in del
File “/Applications/”, line 1327, in close
self.backend.close() # moved here, dereferencing the window prevents
AttributeError: ‘NoneType’ object has no attribute ‘close’