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 ('3e0ff5ef2395d8d4b86b4dfda4587c0d', -1, 1713935483, 1713935483, '03810dc9', -4, 0, 0)

Line : 187
File : sessions.php