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 ('b7e02566757955c17a54a3d6e5b8eb2f', -1, 1419187128, 1419187128, '36ea8d2f', -1, 0, 0)

Line : 172
File : sessions.php