Violentmonkey: Error: Could not establish connection. Receiving end does not exist.

[Luke-Baker]

What is the problem?

Every time I close a tab, two instances of this error message pop up in the Browser Console. This doesn't happen with Violentmonkey disabled.

How to reproduce it?

1. Close a tab.

What is the expected result?

Closing tabs doesn't pollute the console with error messages.

What is the actual result?

Two instances of Error: Could not establish connection. Receiving end does not exist. (2) undefined are logged to the console.

Environment

• Browser: Nightly
• Browser version: 59.0a1 build 20171130101246
• Violentmonkey version: 2.8.20
• No scripts
• All other add-ons disabled
• OS: Windows 10 x64

[gera2ld]

Oh, I see, it will be seen on Firefox if a message could not be sent successfully.

[GitCurious]

I am seeing this error with ViolentMonkey [2.9.1] in Firefox [59.0.2] and Waterfox [56.1]
when opening the browser but only once....not for each tab that is opened.

is it something that I should be worried about or just a cosmetic glitch in the error console ?

[gera2ld]

@GitCurious It's just a warning when a broadcast has no listeners. It should be ignored and I'll try to fix this by suppressing the messages.

[GitCurious]

Thanks Gerald - I won`t worry about it now.

I only recently saw this message due to changing over to TM after realising the other two weren`t as good.