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 ('ff635d2b0b82d86dd2dee4be7bc51997', -1, 1558521924, 1558521924, '22e54cc1', 4, 0, 0)

Line : 187
File : sessions.php