phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('3e72b95b0d2c2d75f9dc8f76be15f652', -1, 1614930656, 1614930656, '03ee07ca', -12, 0, 0)

Line : 189
File : sessions.php