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 ('7eeed4ae4852b7ad4ec5633f28aed4cb', -1, 1524609606, 1524609606, '36a26906', 16, 0, 0)

Line : 187
File : sessions.php