Error Message "There was an error setting cookie mtm_consent_removed. Please check domain and path" on every page load, when requireConsent option is set

[Constantin-Init]

When the requireConsent option is set, every page load logs the error message "There was an error setting cookie mtm_consent_removed. Please check domain and path" to the console.

Reason seems to be that during creation of a Tracker forgetConsentGiven is being called, which then calls setCookie(CONSENT_REMOVED_COOKIE_NAME, ...). setCookie sets the cookie properly, but wants to check that it is indeed set with a call to get getCookie, which then fails, because configCookiesDisabled is set to true at this point, and the function returns 0

Fix would be make the behavior of getCookie and setCookie in regards to the CONSENT_REMOVED_COOKIE_NAME and configCookiesDisabled the same.
The change to setCookie was introduced here 9e10a15

[sgiehl]

Hi @Constantin-Init
Thanks for creating this issue. Guess this should be easily fixed by doing the same check in getCookie as well.
I'll put up a PR to fix that.

[ghnp5]

I noticed I was getting this on every page load, for both "mtm_consent" and "mtm_cookie_consent".

The cookies seemed to be already set, but for some reason, Matomo was failing to set them.

Then I removed the cookies manually (through DevTools) and the issue went away.

I wonder if some Matomo update changed something with the cookies, and the existing cookies were somehow conflicting with the latest Matomo version, that it tried to set them again, but failing.

Now it will be hard to debug, since it's no longer happening to me. But just wanted to put the comment here, in case it brings some lights to you.

Thank you!