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 ('e78f0ce0f0ade64933e6b7a72b2cd16f', -1, 1566425475, 1566425475, '23adeaed', 55, 0, 0)

Line : 187
File : sessions.php