The message port closed before a response was received.

[Vasco Gomes]

Hi, since the last update of Chrome 71-72 I'm reading a lots of this messages on almost all extensions. Both on content script as the background script.

Anyone has an idea of what is going on with Chrome?

From what I understand the issue is between:

chrome.runtime.onMessage.addListener(function (message, sender, sendResponse) -> Background Page

and

chrome.runtime.sendMessage({ ... }, function (response) { -> Content Script

If there is a return true on chrome.runtime.onMessage.addListener the error is reduced but it's supposed to only return true when there is a message to be sent latter (assync message). If there is no return message we don't send anything.

Please help.

Greetings.

[Deliaz]

I can confirm that the problem still exists. Working on extension with Popup sending messages to Background. Even If the background returns true and then call response fn (async response) - I still see "The message port closed before a response was received."

Any guess? I noticed that problem since Chrome v73. 

[Vasco Gomes]

Hi, yes still having the issue.

Greetings.

[thescripter]

Yep this issue exists for me too.

[Vasco Gomes]

Still having this issue. Don't know why...

Greetings.