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 ('fa11587a0aff29e3c66ff1df09b8626c', -1, 1513135118, 1513135118, '36e37e45', 15, 0, 0)

Line : 211
File : sessions.php