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 ('1ecd13b6f53a7f39785fc2d2c7d2bdf0', -1, 1516565385, 1516565385, '36e2295b', -9, 0, 0)

Line : 187
File : sessions.php