Nginx gives errors and won’t load the ruby on rails app

When I open the website, I get the “Welcome to nginx!” page instead of the app’s home page.
here are the errors I get when I go to /var/log/nginx/error.log:

2023/10/20 09:40:03 [error] 351272#351272: *4 open() "/usr/share/nginx/html/favicon.ico" failed (2: No such file or directory), client: *ip hidden*, server: , request: ...">

2023/10/20 09:46:32 [error] 351272#351272: *8 open() "/usr/share/nginx/html/users" failed (2: No such file or directory), client: *ip hidden*, server: , request: "GET /u ...>

2023/10/20 09:46:40 [error] 351272#351272: *10 open() "/usr/share/nginx/html/home" failed (2: No such file or directory), client: *ip hidden*, server: , request: "GET /h...>

2023/10/20 09:48:50 [error] 351272#351272: *12 open() "/usr/share/nginx/html/login" failed (2: No such file or directory), client: *ip hidden*, server: , request: "GET /...>

2023/10/20 09:48:59 [error] 351272#351272: *14 open() "/usr/share/nginx/html/logindfe" failed (2: No such file or directory), client: *ip hidden*, server: , request: "GE>