Does not work in Apache subdomain, what should I do?

Guys, tell me plyz, threw in a folder files executable to a server in the path /var/www/mouthman
in this folder there are files which should open after the slash mouthman main domain/subdomain.
On the domain itself, when I type it works but when I add /subdomain fails with the following error
joxi.ru/BA09Y6GhJ71Gbr
Plyz tell me what to do???
June 14th 19 at 18:53

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