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 ('7e53fd0a6be15f7880a6fbe5e2a448ba', -1, 1713886964, 1713886964, '12d82074', -4, 0, 0)

Line : 187
File : sessions.php