DB Error: Table './sprocorg_yedek/sessions' is marked as crashed and last (automatic?) repair failed

Stack Trace:

File: /home/sprocorg/domains/un-pub.eu/public_html/ojs/lib/pkp/classes/session/SessionDAO.inc.php line 37
Function: DAO->retrieve("SELECT * FROM sessions WHERE session_id = ?", Array(1))

File: /home/sprocorg/domains/un-pub.eu/public_html/ojs/lib/pkp/classes/session/SessionManager.inc.php line 168
Function: SessionDAO->getSession("9u7h2l0nencprb6i8se4qeau0p")

File: (unknown) line (unknown)
Function: SessionManager->read("9u7h2l0nencprb6i8se4qeau0p")

File: /home/sprocorg/domains/un-pub.eu/public_html/ojs/lib/pkp/classes/session/SessionManager.inc.php line 58
Function: session_start()

File: /home/sprocorg/domains/un-pub.eu/public_html/ojs/lib/pkp/classes/session/SessionManager.inc.php line 129
Function: SessionManager->__construct(Object(SessionDAO), Object(Request))

File: /home/sprocorg/domains/un-pub.eu/public_html/ojs/lib/pkp/classes/security/Validation.inc.php line 366
Function: SessionManager::getManager()

File: /home/sprocorg/domains/un-pub.eu/public_html/ojs/lib/pkp/classes/core/PKPPageRouter.inc.php line 66
Function: Validation::isLoggedIn()

File: /home/sprocorg/domains/un-pub.eu/public_html/ojs/lib/pkp/classes/core/Dispatcher.inc.php line 117
Function: PKPPageRouter->isCacheable(Object(Request))

File: /home/sprocorg/domains/un-pub.eu/public_html/ojs/lib/pkp/classes/core/PKPApplication.inc.php line 247
Function: Dispatcher->dispatch(Object(Request))

File: /home/sprocorg/domains/un-pub.eu/public_html/ojs/index.php line 69
Function: PKPApplication->execute()