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 ('061a7cb4f193b8bd28a2b3e0c49be73f', -1, 1513290639, 1513290639, '36a3d16d', 3, 0, 0)

Line : 186
File : sessions.php