Unchecked runtime.lastError: A listener indicated an asynchronous response by returning true, but the message channel closed before a response was received

[bunglegrind]

It can emerge in different actions. Currently, it doesn't generate significant errors, but it may in future evolution.

What can be done to solve it:

1. Choose a proper strategy for error handling (e.g., the content script show onscreen every error that are passed by a specific error message)
2. Check if all the invoked APIs return values are actually inspected to see if error have occurred

Sequence diagrams can help.