Uncaught Error: A cross-origin error was thrown. React doesn't have access to the actual error object in development

Question

Everytime I submit a zone, It display this error \'Uncaught Error: A cross-origin error was thrown. React doesn\'t have access to the actual error object in development\' It

Answer 1

This is shown because React does not show the traceback of the error due to security concerns. The error could be unrelated to CORS altogether. I suggest to look at the console for errors that would show up. Resolving those errors may solve your issue.