phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1194 Table '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 ('b9c62810d9f191de5e6ae8b94e474e6f', -1, 1419308428, 1419308428, '36c56e97', -4, 0, 0)

Line : 187
File : sessions.php