Instalace joomla

Dobrý den,

prosim o radu, nedari se mi instalace CMS joomla. Tim, ze mam tento hosting prvne, tak nemam uplne zkusenosti. Jine me stranky lezi na jinem hostingu, kde s instalaco problem nemam. Je mozne, ze to je verzi php. Snazil jsem se prohledat obecne diskuze, ale moc se mi nepodarilo. Muzete mi prosim nastavit prozatim nizzsi verzi php. Pripadne, uvitam radu.

Dekuji

Warning: session_start(): open(/data/web/virtuals/229623/virtual/session/sess_d68acd89f731e804d7a5a9105f0f3cda, O_RDWR) failed: No such file or directory (2) in /data/web/virtuals/229623/virtual/www/libraries/joomla/session/handler/native.phpon line 260

Warning: session_start(): Failed to read session data: files (path: /data/web/virtuals/229623/virtual/session) in /data/web/virtuals/229623/virtual/www/libraries/joomla/session/handler/native.php on line 260
Failed to start the session