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 ('7c1c7e15649c28795dfa8bf7afe34f09', -1, 1713905858, 1713905858, '12bff0f3', 0, 0, 0)

Line : 187
File : sessions.php