Fatal error, Unable to connect on Piwik

I get the following error message when i try to connect on my Piwik:

Fatal error: spl_autoload() [function.spl-autoload]: Class Zend_Log_Exception could not be loaded in /public_html/piwik/libs/Zend/Log/Writer/Stream.php on line 135

I haven’t touched or modified anything, (cookies ok) yesterday everything worked without problems

Any ideas what happened or how I could solve this?

Regards,
Franck

hello,

I answered myself,
Sorry for this useless post, it was a php session error on the server.

Regards,
Franck

Hello @franck_s

I also met the same problem. How did you resolve “php session error”? I’m awaiting for your reply

Thank you