That is what exactly I got, only in Safari 15.2 or higher 16. Using the proxy devServer, points to backend asp.net core and gets this 'ws://xxx.xxx.xx.xx:8080/ws' connection failure issue on every page. The workaround I tried is to disable the NSURLSession WebSocket in Safari but our client won't like it because it is a default setting now. I actually tried to upgrade to version 8.17 but remain all vuex-module-decorators modules. Still the same so I have to try the 8.17 with Pinia storage
Let me know if you need a remote environment to replicate.

Please advise how to fix it.

Can I get an older version of Metronic Demo2 from last year to test? I have been trying to figure out the issue and so far I believe it has to do with the versioning of the dependencies.

My project architecture has a Asp.net Core backend, Vue 3 frontend and I am using SPA services in my Asp.net Core application to utilize a ProxyToSpaDevelopmentServer. As I stated I have another application with the same architecture that uses Metronic Demo1 from Fall of 2021 that works perfect.

Hi,

Demo1 and Demo2 differ only in style files and also with layout components, other theme parts must be the same for all demos.

If you are using Vue then on our preview page we do not have this error.
https://preview.keenthemes.com/metronic8/vue/demo2/#/dashboard

Also if there are any steps on how to reproduce this issue please describe them.

Regards,
Lauris Stepanovs,
Keenthemes Support Team