A. I get the error that i must log in to send emails (but email is verified and user-email is enabled). Who has an idea (also in mw1.38.2) - but i want it for guests
B. With debugger i get the error (after login) : ....Spezial:Kontakt ConfigException: GlobalVarConfig::get: undefined option: 'CaptchaClass'....
This is because in line 527 of specialcontact.php stands :
private function useCaptcha (....
527 return $config->get( 'CaptchaClass' )
captcha - class comes from Confirmedit (ResourceLoaderHooks.php line 22) , where it has the value 'MediaWiki\\Extensions\\ConfirmEdit\\hCaptcha\\HCaptcha'
I think this should be corrected (at least in the master)