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 ('1bfac2f3798c603da9e8b499e633e2f7', -1, 1614692637, 1614692637, '36ec3adc', -2, 0, 0)

Line : 189
File : sessions.php