cause: mqtt_browser_client
was using dart:js_interop
which can't be run on a android platform
It was due to mqtt_browser_client
my app runs on web and app as well so I implemented mqtt_browser_client
for web before clean and upgrade everything was working fine but after that libraries got updated and I was stuck with this bug, I removed all the occurrences of mqtt_browser_client
from my app and it starts work again