phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpbb/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('f48ce48374e9d2700cf1f8a9ef228d18', -1, 1430118376, 1430118376, '17162d56', -1, 0, 0)

Line : 187
File : sessions.php