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 ('99a84660c85b9e3419df48fef77fcf79', -1, 1713895802, 1713895802, '12dd8113', -11, 0, 0)

Line : 187
File : sessions.php