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 ('da8ff4d597d818516b11ede2765f8dec', -1, 1508824017, 1508824017, '36a1497b', 2, 0, 0)

Line : 187
File : sessions.php