After a Chromium update we have noticed our pyscript.fs broke so that:

• a bug has been filed to inform Chromium about the regression or breaking change: https://issues.chromium.org/issues/454531070
• investigation occurred and code has been updated to use the pattern that doesn't throw cryptic errors anymore
• extensive tests both on Pyodide and MicroPython, main thread and workers, has been manually done to be sure all expectations are met

From users' perspective, the modal about granting access might happen twice now:

• the first time lasts the whole session or until you close your browser
• the next time you get a chance to allow that access always, as opposite of once
• if you accept always that dialog will never bother you again unless you clear the whole browser cache

More details in #2395.