Fix error if running only locally without internet

[arunge]

Via e-mail:

... I consistently encounter "HTTP error 500" after entering the local server address.

[arunge]

I am still trying to identify the problem. I fixed an error that the app does not crash anymore when used offline (version 23.4.1.18). When running R locally (.e.g with RStudio) it works. However, when using the app offline with docker, it reacts very slow, one has to wait ~30 seconds until the import module loads. I already added some timeouts when testing for an available internet connection. However, there is still something not working as intended.

So this is not solved yet. Thanks for your patience!

[arunge]

@isomemo With version 23.06.1 on ios-app beta I reduced the parts in the code where the app checks for an internet connection, and removed bugs that lead the app crash when using it offline.

A check for an internet connection tries to reach a webpage until a timeout, if the page could not be reached within this time, the app assumes that there is no internet connection. Although, the timeout is only 2 seconds and I do only selectively check for a connection, the app is very slow when working offline with docker. I don't know why. There are no such problems when working offline with RStudio.

If one really needs to work offline I therefore would recommend to try the local R installation.

Hopefully, this does solve the issue.