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 ('8e21835f5efa2f0e7fc0cc6b463d2761', -1, 1519198535, 1519198535, '36dd8343', 11, 0, 0)

Line : 187
File : sessions.php