phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './illustra_phpbb1/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 ('b7da0f6b77784f3a1b79d0c2a5425ba7', -1, 1397974651, 1397974651, '36cdadfc', -1, 0, 0)

Line : 187
File : sessions.php