cy.visit() returns 404, but why? The site is completely reachable and I don't see a 404.

[2bit-waterkamp]

Hi all,

I have a simple site running well on http://localhost:4200/.

When cy.visit('/my-study') is called I returns me an 404 (see screenshot below).

But there when I open the complete url in the browser it works and I don't see by using the devtools a reason or a request which
is an 404 statuscode.

One more thing which is very strange:
When I use the flag cy.visit('/my-study', { failOnStatusCode: false }) it works! (but this is ugly and I would like to know the reason of this 404).

Any idea why the ONLY the cypress testrunner gives me a 404?

[2bit-waterkamp]

I could fix it at the end.
I was running my Angular app within a container based on the image -> node:16.15.1-alpine

I changed the config of the nginx-server.

1. I added following line to my nginx.conf:
   location / {
   root /usr/share/nginx/html;
   index index.html index.htm;
   try_files $uri /index.html;
   }

2. I overwrote the default-config with my new config within my Dockerfile:

FROM node:16.15.1-alpine as node
WORKDIR /app
COPY . .
RUN npm ci
RUN npm run build:cypress

FROM nginx:alpine
COPY ./nginx.conf /etc/nginx/conf.d/default.conf
COPY --from=node /app/dist/. /usr/share/nginx/html