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 ('fc3c3a42e2d0b923334b99bd80c7c5ed', -1, 1529445042, 1529445042, '36e0ebb7', 38, 0, 0)

Line : 187
File : sessions.php