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 ('a7b649467f09e521e68b6b07ab06e107', -1, 1540168252, 1540168252, '36a14d1e', 17, 0, 0)

Line : 189
File : sessions.php