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 ('80e5b008fd3c29415b363e3451f0eb35', -1, 1519416349, 1519416349, '36a74b1c', -2, 0, 0)

Line : 187
File : sessions.php