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 ('540bc8ee9cab332dc2302886fe6fe842', -1, 1435919664, 1435919664, '36502f7b', -1, 0)

Line : 158
File : sessions.php