'403 Client Error' while submitting to codeforces

[R1B3n-13]

Description

while submitting to codeforces I'm receiving 403 Client Error message.

Error log

$ oj s https://codeforces.com/contest/1451/problem/A E:\CP\CF\A\A.cpp --wait=0 --yes --no-open -l 54
[INFO] online-judge-tools 11.1.1 (+ online-judge-api-client 10.5.0)
[WARNING] cannot guess URL since the given file is not in the current directory
[INFO] problem recognized: CodeforcesProblem.from_url('https://codeforces.com/contest/1451/problem/A'): https://codeforces.com/contest/1451/problem/A
[INFO] code (1865 byte):

** MY SOLUTION **

[INFO] load cookie from: C:\Users\nebir\AppData\Local\online-judge-tools\online-judge-tools\cookie.jar
[NETWORK] GET: https://codeforces.com/enter
[NETWORK] 302 Found
[INFO] You are logged in.
[NETWORK] GET: https://codeforces.com/contest/1451/problem/A
[NETWORK] 200 OK
[INFO] chosen language: 54 (GNU G++17 7.3.0)
[WARNING] the problem "https://codeforces.com/contest/1451/problem/A" is specified to submit, but no samples were downloaded in this directory. this may be mis-operation
[NETWORK] GET: https://codeforces.com/contest/1451/problem/A
[NETWORK] 200 OK
[NETWORK] POST: https://codeforces.com/contest/1451/problem/A
[NETWORK] 403 Forbidden
[ERROR] 403 Client Error:  for url: https://codeforces.com/contest/1451/problem/A
Traceback (most recent call last):
  File "C:\Users\nebir\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\onlinejudge\service\codeforces.py", line 389, in submit_code
    resp.raise_for_status()
  File "C:\Users\nebir\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\requests\models.py", line 943, in raise_for_status
    raise HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 403 Client Error:  for url: https://codeforces.com/contest/1451/problem/A
[WARNING] You may use wrong User-Agent: 'online-judge-tools/11.1.1 (+https://github.com/online-judge-tools/oj)'
[FAILURE] submission failed

Environment

Windows 10 Pro
Build: 19042.630.

$ python --version
Python 3.8.6

$ oj --version
online-judge-tools 11.1.1 (+ online-judge-api-client 10.5.0)

[kmyk]

As you may have notice, this issue seems the same to #117.
But thank you for reporting. This is a good bug-report.