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 ('7ffb385f9d4d1637b3f67a7f9cd1f55d', -1, 1542753861, 1542753861, '365207e7', 15, 0, 0)

Line : 189
File : sessions.php