Unklare Fehlermeldung - Login ist nicht mehr möglich

Hallo zusammen

Seit kurzem kann ich nicht mehr auf die Online-Statistik von PIWIK zugreifen. Klicke ich auf der Anmeldeseite auf “Anmelden”, so erscheint folgende Meldung. Der Fehler trat kurz nachdem auf, als ich die index-Seite aktualisiert habe - besteht möglicherweise ein Zusammenhang? Am Quellcode von PIWIK auf der index-Seite habe ich aber nichts geändert!

Folgende Fehlermeldung tritt auf:


Strict Notice: Non-static method Piwik_FrontController::dispatch() should not be called statically, assuming $this from incompatible context in /users/pilotline/www/piwik/core/Controller.php on line 434

Backtrace -->
#0 Piwik_ErrorHandler(2048, Non-static method Piwik_FrontController::dispatch() should not be called statically, assuming $this from incompatible context, /users/pilotline/www/piwik/core/Controller.php, 434, Array ([moduleToRedirect] => CoreHome,[actionToRedirect] => index,[websiteId] => ,[defaultPeriod] => day,[defaultDate] => yesterday,[currentLogin] => anonymous)) called at [/users/pilotline/www/piwik/core/Controller.php:434]
#1 Piwik_Controller->redirectToIndex(CoreHome, index) called at [/users/pilotline/www/piwik/plugins/CoreHome/Controller.php:41]
#2 Piwik_CoreHome_Controller->redirectToCoreHomeIndex()
#3 call_user_func_array(Array ([0] => Piwik_CoreHome_Controller Object ([] => CoreHome,[] => ,[] => ,[] => 0,[] => ),[1] => redirectToCoreHomeIndex), Array ()) called at [/users/pilotline/www/piwik/core/FrontController.php:126]
#4 Piwik_FrontController->dispatch() called at [/users/pilotline/www/piwik/index.php:60]

Wenn ich dann nochmals auf “Anmelden” klicke, erweitert sich die Fehlermeldung:


Warning: Cannot modify header information - headers already sent by (output started at /users/pilotline/www/piwik/libs/Zend/Log/Writer/Stream.php:130) in /users/pilotline/www/piwik/core/Cookie.php on line 130

Backtrace -->
#0 Piwik_ErrorHandler(2, Cannot modify header information - headers already sent by (output started at /users/pilotline/www/piwik/libs/Zend/Log/Writer/Stream.php:130), /users/pilotline/www/piwik/core/Cookie.php, 130, Array ())
#1 header(P3P: CP='OTI DSP COR NID STP UNI OTPa OUR') called at [/users/pilotline/www/piwik/core/Cookie.php:130]
#2 Piwik_Cookie->setP3PHeader() called at [/users/pilotline/www/piwik/core/Cookie.php:160]
#3 Piwik_Cookie->save() called at [/users/pilotline/www/piwik/plugins/Login/Login.php:111]
#4 Piwik_Login->initSession(Piwik_Event_Notification Object ([_notificationName] => Login.initSession,[_notificationObject] => Array ([login] => pilotline,[md5Password] => b41ce95e9bad575f5e8ad3d9a335e02e,[rememberMe] => ),[_notificationInfo] => Array (),[_notificationState] => 0,[_notificationCount] => 0))
#5 call_user_func_array(Array ([0] => Piwik_Login Object (),[1] => initSession), Array ([0] => Piwik_Event_Notification Object ([_notificationName] => Login.initSession,[_notificationObject] => Array ([login] => pilotline,[md5Password] => b41ce95e9bad575f5e8ad3d9a335e02e,[rememberMe] => ),[_notificationInfo] => Array (),[_notificationState] => 0,[_notificationCount] => 0))) called at [/users/pilotline/www/piwik/libs/Event/Dispatcher.php:284]
#6 Event_Dispatcher->postNotification(Piwik_Event_Notification Object ([_notificationName] => Login.initSession,[_notificationObject] => Array ([login] => pilotline,[md5Password] => b41ce95e9bad575f5e8ad3d9a335e02e,[rememberMe] => ),[_notificationInfo] => Array (),[_notificationState] => 0,[_notificationCount] => 0), 1, ) called at [/users/pilotline/www/piwik/core/PluginsManager.php:532]
#7 Piwik_PostEvent(Login.initSession, Array ([login] => pilotline,[md5Password] => b41ce95e9bad575f5e8ad3d9a335e02e,[rememberMe] => )) called at [/users/pilotline/www/piwik/plugins/Login/Controller.php:112]
#8 Piwik_Login_Controller->authenticateAndRedirect(pilotline, b41ce95e9bad575f5e8ad3d9a335e02e, ) called at [/users/pilotline/www/piwik/plugins/Login/Controller.php:51]
#9 Piwik_Login_Controller->login() called at [/users/pilotline/www/piwik/plugins/Login/Controller.php:28]
#10 Piwik_Login_Controller->index()
#11 call_user_func_array(Array ([0] => Piwik_Login_Controller Object ([] => Login,[] => ,[] => ,[] => 0,[] => ),[1] => index), Array ()) called at [/users/pilotline/www/piwik/core/FrontController.php:126]
#12 Piwik_FrontController->dispatch(Login, ) called at [/users/pilotline/www/piwik/core/Controller.php:434]
#13 Piwik_Controller->redirectToIndex(CoreHome, index) called at [/users/pilotline/www/piwik/plugins/CoreHome/Controller.php:41]
#14 Piwik_CoreHome_Controller->redirectToCoreHomeIndex()
#15 call_user_func_array(Array ([0] => Piwik_CoreHome_Controller Object ([] => CoreHome,[] => ,[] => ,[] => 0,[] => ),[1] => redirectToCoreHomeIndex), Array ()) called at [/users/pilotline/www/piwik/core/FrontController.php:126]
#16 Piwik_FrontController->dispatch() called at [/users/pilotline/www/piwik/index.php:60]


Warning: Cannot modify header information - headers already sent by (output started at /users/pilotline/www/piwik/libs/Zend/Log/Writer/Stream.php:130) in /users/pilotline/www/piwik/core/Cookie.php on line 122

Backtrace -->
#0 Piwik_ErrorHandler(2, Cannot modify header information - headers already sent by (output started at /users/pilotline/www/piwik/libs/Zend/Log/Writer/Stream.php:130), /users/pilotline/www/piwik/core/Cookie.php, 122, Array ([Name] => piwik_auth,[Value] => login=cGlsb3RsaW5l:token_auth=NWNmMDk0ZTI2MTA4YzBkNjRjNWY4ZDU4Y2UxMjdmYTE=:_=f5f879746c3d98823dad4abe992c3961042ce1d8,[Expires] => 1377606109,[Path] => ,[Domain] => ,[Secure] => ,[HTTPOnly] => ,[header] => Set-Cookie: piwik_auth=login%3DcGlsb3RsaW5l%3Atoken_auth%3DNWNmMDk0ZTI2MTA4YzBkNjRjNWY4ZDU4Y2UxMjdmYTE%3D%3A_%3Df5f879746c3d98823dad4abe992c3961042ce1d8; expires=Tue, 27-Aug-2013 12:21:49 GMT))
#1 header(Set-Cookie: piwik_auth=login%3DcGlsb3RsaW5l%3Atoken_auth%3DNWNmMDk0ZTI2MTA4YzBkNjRjNWY4ZDU4Y2UxMjdmYTE%3D%3A_%3Df5f879746c3d98823dad4abe992c3961042ce1d8; expires=Tue, 27-Aug-2013 12:21:49 GMT, ) called at [/users/pilotline/www/piwik/core/Cookie.php:122]
#2 Piwik_Cookie->setCookie(piwik_auth, login=cGlsb3RsaW5l:token_auth=NWNmMDk0ZTI2MTA4YzBkNjRjNWY4ZDU4Y2UxMjdmYTE=:_=f5f879746c3d98823dad4abe992c3961042ce1d8, 1377606109, ) called at [/users/pilotline/www/piwik/core/Cookie.php:161]
#3 Piwik_Cookie->save() called at [/users/pilotline/www/piwik/plugins/Login/Login.php:111]
#4 Piwik_Login->initSession(Piwik_Event_Notification Object ([_notificationName] => Login.initSession,[_notificationObject] => Array ([login] => pilotline,[md5Password] => b41ce95e9bad575f5e8ad3d9a335e02e,[rememberMe] => ),[_notificationInfo] => Array (),[_notificationState] => 0,[_notificationCount] => 0))
#5 call_user_func_array(Array ([0] => Piwik_Login Object (),[1] => initSession), Array ([0] => Piwik_Event_Notification Object ([_notificationName] => Login.initSession,[_notificationObject] => Array ([login] => pilotline,[md5Password] => b41ce95e9bad575f5e8ad3d9a335e02e,[rememberMe] => ),[_notificationInfo] => Array (),[_notificationState] => 0,[_notificationCount] => 0))) called at [/users/pilotline/www/piwik/libs/Event/Dispatcher.php:284]
#6 Event_Dispatcher->postNotification(Piwik_Event_Notification Object ([_notificationName] => Login.initSession,[_notificationObject] => Array ([login] => pilotline,[md5Password] => b41ce95e9bad575f5e8ad3d9a335e02e,[rememberMe] => ),[_notificationInfo] => Array (),[_notificationState] => 0,[_notificationCount] => 0), 1, ) called at [/users/pilotline/www/piwik/core/PluginsManager.php:532]
#7 Piwik_PostEvent(Login.initSession, Array ([login] => pilotline,[md5Password] => b41ce95e9bad575f5e8ad3d9a335e02e,[rememberMe] => )) called at [/users/pilotline/www/piwik/plugins/Login/Controller.php:112]
#8 Piwik_Login_Controller->authenticateAndRedirect(pilotline, b41ce95e9bad575f5e8ad3d9a335e02e, ) called at [/users/pilotline/www/piwik/plugins/Login/Controller.php:51]
#9 Piwik_Login_Controller->login() called at [/users/pilotline/www/piwik/plugins/Login/Controller.php:28]
#10 Piwik_Login_Controller->index()
#11 call_user_func_array(Array ([0] => Piwik_Login_Controller Object ([] => Login,[] => ,[] => ,[] => 0,[] => ),[1] => index), Array ()) called at [/users/pilotline/www/piwik/core/FrontController.php:126]
#12 Piwik_FrontController->dispatch(Login, ) called at [/users/pilotline/www/piwik/core/Controller.php:434]
#13 Piwik_Controller->redirectToIndex(CoreHome, index) called at [/users/pilotline/www/piwik/plugins/CoreHome/Controller.php:41]
#14 Piwik_CoreHome_Controller->redirectToCoreHomeIndex()
#15 call_user_func_array(Array ([0] => Piwik_CoreHome_Controller Object ([] => CoreHome,[] => ,[] => ,[] => 0,[] => ),[1] => redirectToCoreHomeIndex), Array ()) called at [/users/pilotline/www/piwik/core/FrontController.php:126]
#16 Piwik_FrontController->dispatch() called at [/users/pilotline/www/piwik/index.php:60]

Über dem Anmeldefenster steht folgende Meldung:

Fehler: You must call Zend_Session::regenerateId() before any output has been sent to the browser; output started in /users/pilotline/www/piwik/libs/Zend/Log/Writer/Stream.php/130

Hat jemand eine Idee? Herzlichen Dank für eure Hilfe
Gruss Tobias