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) VALUES ('c45ef7b0de889aa8c539e8873cb164d9', -1, 1436196975, 1436196975, '36a140ae', -1, 0)

Line : 158
File : sessions.php