I am also having problems:

When I attempt to submit, the code passes all testes except one named "should work".

This test says it expects

'[\'E.Honda\', \'Blanka\', \'Guile\', \'Balrog\', \'Vega\', \'M.Bison\', \'Sagat\', \'Sagat\', \'Sagat\', \'Balrog\', \'Sagat\', \'Balrog\', \'Guile\', \'Balrog\', \'Vega\', \'Vega\']'

, but received

'[]'

Based on the expectation, I set up a test with

moves = ["right","right","right","right","right","down","left","down","down","up","down","up","left","right","right","up"];

with which the output is as expected.

Please check if tests on submit are correct.

In Javascript, the tests and final evaluation fail even with correct answers