Test file 1 and 4 failing

[Gonza10V]

Test failing on test conversion file 1 and 4

FAILED tests/test_converter_function.py::test_conversion_file1 - urllib.error.HTTPError: HTTP Error 502: Proxy Error
FAILED tests/test_converter_function.py::test_conversion_file4 - urllib.error.HTTPError: HTTP Error 503: Service Unavailable