[console error] unexpected javascript error from running app

[centrocodeur]

DartPad displayed an unexpected error in the console:

Uncaught SecurityError: Failed to read the 'localStorage' property from 'Window': The document is sandboxed and lacks the 'allow-same-origin' flag., error: SecurityError: Failed to read the 'localStorage' property from 'Window': The document is sandboxed and lacks the 'allow-same-origin' flag.

[biggs0125]

This seems like an expected error from code trying to access localStorage which is not allowed in DartPad. Please re-open this with a code sample causing the error if that is not the case.