`quick-mention`: undefined is not an object (evaluating 'select_dom("img", avatar).alt') #4844

This console error consistently appears on the test page only. I don't see it anywhere else

Console errors

init@safari-web-extension://1282C589-9FD0-4F34-9127-696B6A884350/build/refined-github.js:7765:56
@safari-web-extension://1282C589-9FD0-4F34-9127-696B6A884350/build/refined-github.js:1964:28
asyncFunctionResume@[native code]
@safari-web-extension://1282C589-9FD0-4F34-9127-696B6A884350/build/refined-github.js:1697:17
asyncFunctionResume@[native code]
forEach@[native code]
run@safari-web-extension://1282C589-9FD0-4F34-9127-696B6A884350/build/refined-github.js:1696:23

Test URL

https://github.com/pixiebrix/pixiebrix-extension/pull/1548

Browser

Safari