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Your LimeSurvey version: 5.3.31
Own server or LimeSurvey hosting: Own server in a docker container
Survey theme/template: default
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Hello, 
When I edit remotecontrol_handle.php file (just a brealine in this file), limesurvey API broke and return me Error 500 : class "remotecontrol_handle" not found.
Even if I reset the file to its initial state, Limesurvey API return the same error. 

But Limesurvey Interface still running correctly, it's just the API that doesn't work anymore.The only solution I found it's to reinstall limesurvey.
Before that , I could edit this file and add new functions and I didn't do any update or anything. That's why I don't understand why this is happen.

Anyone could help me please ?