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 ('9ae2aad087f8c3f52d933fd2bb9cb669', -1, 1558868766, 1558868766, '36e34c23', 4, 0, 0)

Line : 187
File : sessions.php