Developing app using live-reload on Android doesn't work anymore

I recently updated Capacitor in our app to v3, but I think that’s unrelated. The app doesn’t work anymore on Android when starting it with “ionic cap run android -l --external”. It remains on the splash screen and with Chrome Dev Tools I get this output:

Instead, when starting it with “ionic cap run android” it works, but I can’t use live-reloading.
Might this be a problem with the deviceready event? Because without live-reloading, I get this output:

Output of “ionic info”:


(I don’t know if bumping is allowed; I found no specific rule, that forbids it. Please delete this post if it’s forbidden.)

It looks like something in your system messing with the local web server, maybe a firewall or antivirus