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 ('c8f5ce6f5ba4dbc5968c81fb498d205e', -1, 1713519298, 1713519298, '12e33083', 0, 0, 0)

Line : 187
File : sessions.php