Building a Flutter web app while being connected to the internet gives me an internal server error.?

Question

When I run my flutter web project in a debug version of Chrome while being connected to internet, I get the following build message:

Launching lib\main.dart on Chrome in debug mode...

Building application for the web...

Attempting to connect to browser instance..

Debug service listening on ws://127.0.0.1:55339/mh67GZ3e4D0=

Which probably means that the website is hosted locally with port 55339.

But the chrome windows is opened with the port 55063 and which is completely blank.

When I try to open "127.0.0.1:55339", which supposedly should open my web project gives me an error: Internal Server Error

But when I disconnect from Internet and build the project , Project builds successfully and executes perfectly, as in the proper window is opened.

What could possibly go wrong while I am connected to internet, something related to proxy?

How do I build the project while still being connected to internet?

Solution

try to run with this command: flutter run --release -d chrome -v

Comments

[Dan]

While this may answer the question, it's useful to include an explanation.