phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './stadia_gr_@002d_forum/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 ('0716d78bfdbb71f6978ec8f9d6a9028b', -1, 1493576972, 1493576972, '365c88e6', 5, 0, 0)

Line : 187
File : sessions.php