Caused by: SyntaxError: Unexpected token '

Question

In case anyone gets this error suddenly,
*Error*
Uncaught Promise > An error occured in the owl lifecycle (see this Error's "cause" property).....Caused by: SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON

.....

Maz Stuart - ODIY Academy · Accepted Answer

*we solved it as follows:*
Debug and find the app causing the issue  Upgrade the Odoo App/Module with the issue  It’s related to the JavaScript files on the server I believe, upgrading the app forced it to get regenerated  In your user browser, Open the dev tools (Ctl shift +i) then go to the application section and storage. Remove all the cache and reset databases. Clear all browser caches
Feedback for Odoo: Debugging this issue was a challenge, "Odoo need to make their JavaScript debugging bet

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