phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a3d45713583424efb8cc6b2e78a8547f', -1, 1519127414, 1519127414, '36a71dd0', -9, 0, 0)

Line : 187
File : sessions.php