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 ('e70996e13d1c0c6243637ad1bb900737', -1, 1511066797, 1511066797, '36e0661a', 14, 0, 0)

Line : 187
File : sessions.php