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 ('1dd4758d2bf210c3415a74f6bc0d73e2', -1, 1614399508, 1614399508, '22ed7cd2', 4, 0, 0)

Line : 189
File : sessions.php