The error description starts with:
... Failed to pull the backend. Unexpected token 'export' C:========================\src\aws-exports.js:36 export default awsmobile; ^^^^^^ SyntaxError: Unexpected token 'export' ...
The problem could be, the app is looking for aws-exports.TS, instead of the JS version
Changed it worked for me.
Update2: After re-installing AmplifyCLI, it works again