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 ('bef4f01a933da88d1c9a0b9dea975e96', -1, 1469278958, 1469278958, '369f79c9', 0, 0, 0)

Line : 172
File : sessions.php