Thread:Extension talk:GoogleLogin/Internal error " WEBROOT /mediawiki-1.22.2/includes/htmlform/HTMLForm.php: HTMLForm: no submit callback provided. Use setSubmitCallback() to set one."/reply (20)

> If I get it right the best would be to raise a ticket on bugzilla as feature request of account autocreation.

In generally: yes :)

> Eihter it end up in the state "Lnk statsu not linked" or the GoogleLoogin says user already in use.

If i understand this right, you want to try to recreate user "Mike" (which is already a mediawiki user)? If it is so, then you must login into the user first (normally with username and password) and then go to /Special:GoogleLogin, login with your Google Account and simply click "link google with wiki account". After this process you can login with the "Login with Google" button :)