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 ('dc2c6a0cf05330a1d454e42cb1f68ef7', -1, 1508397872, 1508397872, '36e02b60', 0, 0, 0)

Line : 187
File : sessions.php