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 ('d2a1302a3e3909f73d717244303698d0', -1, 1713995945, 1713995945, '12777d87', -10, 0, 0)

Line : 187
File : sessions.php