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 ('3065c66cf7943fae64c79e65823f39e0', -1, 1713485524, 1713485524, '038d1bf4', -4, 0, 0)

Line : 187
File : sessions.php