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 ('489ddc16e369826aec1163f00e0ef9cc', -1, 1398273006, 1398273006, '36c43904', -1, 0, 0)

Line : 187
File : sessions.php