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 ('870c128259499b6fa30fb66f2f4b5da9', -1, 1713445522, 1713445522, '12df2b8e', -11, 0, 0)

Line : 187
File : sessions.php