json ERROR

[nanosystem2022]

i have json error when push run bottom

Traceback (most recent call last):
File "C:\Users\HP\AppData\Local\Programs\Python\Python39-32\lib\site-packages\flask\app.py", line 2091, in call
return self.wsgi_app(environ, start_response)
File "C:\Users\HP\AppData\Local\Programs\Python\Python39-32\lib\site-packages\flask\app.py", line 2076, in wsgi_app
response = self.handle_exception(e)
File "C:\Users\HP\AppData\Local\Programs\Python\Python39-32\lib\site-packages\flask\app.py", line 2073, in wsgi_app
response = self.full_dispatch_request()
File "C:\Users\HP\AppData\Local\Programs\Python\Python39-32\lib\site-packages\flask\app.py", line 1518, in full_dispatch_request
rv = self.handle_user_exception(e)
File "C:\Users\HP\AppData\Local\Programs\Python\Python39-32\lib\site-packages\flask\app.py", line 1516, in full_dispatch_request
rv = self.dispatch_request()
File "C:\Users\HP\AppData\Local\Programs\Python\Python39-32\lib\site-packages\flask\app.py", line 1502, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
File "d:\cct\Crypto-Copy-Trader\api.py", line 54, in run_process
manual_run()
File "d:\cct\Crypto-Copy-Trader\api.py", line 27, in manual_run
container = server_begin()
File "d:\cct\Crypto-Copy-Trader\Helpers\Helpers.py", line 57, in server_begin
config = json.load(config_f)
File "C:\Users\HP\AppData\Local\Programs\Python\Python39-32\lib\json_init_.py", line 293, in load
return loads(fp.read(),
File "C:\Users\HP\AppData\Local\Programs\Python\Python39-32\lib\json_init_.py", line 346, in loads
return _default_decoder.decode(s)
File "C:\Users\HP\AppData\Local\Programs\Python\Python39-32\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\Users\HP\AppData\Local\Programs\Python\Python39-32\lib\json\decoder.py", line 353, in raw_decode
obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting ',' delimiter: line 8 column 5 (char 255)

how solve this problem
os: windows 10