숙제 제출이 안되요 ㅠㅠ HTTP Error 502

숙제를 제출하면 아래와 같은 화면이 뜨면서 HTTP Error 502 가 생겨요

여러번 실행해도 안되네요 크롬과 웨일 둘다 사용하고있고, 쿠키를 둘다 지워도 제출이 안됩니다

알약 사용중인데 방화벽이랑 내려도 제출이 안되요

D:workspacepython_mooclab_2windows>submit.bat itpk

[2K[92m✔ Session c3e07bba7085c91a1a23c3a4cbc22d6b is ready.[0m

Uploading files: 100%|█| 12.7k/12.7k [00:00<00:00, 205kbytes/s, file=basic_opear

tions_unit_test.py]

[2K[92m✔ Uploading done.[0m

python-kernel: skipping build phase due to missing "setup.py" file

[2K[92m✔ Build finished. (exit code = 0)[0m

Generating result sheet...

             Test Case |  Passed? |   Feedback

test_add_string_number | PASSED | Good Job

test_add_string_string | PASSED | Good Job

test_associative_law_add | PASSED | Good Job

test_associative_law_mutiple | PASSED | Good Job

test_distributive_law | PASSED | Good Job

test_exponent | PASSED | Good Job

test_number_to_str | PASSED | Good Job

test_str_to_float | PASSED | Good Job

test_str_to_int | PASSED | Good Job

Reading source file...

Transferring results to server...

Error occurred on transferring. HTTP Error 502: Bad Gateway

[2K[92m✔ Finished. (exit code = 0)[0m

D:workspacepython_mooclab_2windows>