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 ('00543961b7f4e4dacc7f2114536ede80', -1, 1713565540, 1713565540, '12dbec3e', -8, 0, 0)

Line : 187
File : sessions.php