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 ('4bde304a74f9f1c4cb264694d0516d35', -1, 1469917933, 1469917933, '369ef8e9', -1, 0, 0)

Line : 187
File : sessions.php