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 ('ace287a1c88a328e9e3593b07786a343', -1, 1714832580, 1714832580, '03919cfa', -1, 0, 0)

Line : 187
File : sessions.php