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 ('3794b31d644c91a1782cf7fee7c206c1', -1, 1713258789, 1713258789, '039122b9', -4, 0, 0)

Line : 187
File : sessions.php