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 ('0ebcd86141b272b3a618ce1053c67fdd', -1, 1713940080, 1713940080, '2cc81bd7', -4, 0, 0)

Line : 187
File : sessions.php