2021r3 how do I debug what's triggering WebSession.InterruptionMessage?

In my case I use both Brave and Edge for testing, but I don’t think it’s a browser issue. Basically, I’ve encountered 3 problems:

Problem #1:

Failed to load resource: net::ERR_INCOMPLETE_CHUNKED_ENCODING

To try to solve it I increased DeflateBufferSize to avoid chunked but anyway after a while if the buffer is full the same problem comes back. Then I set SetEnv downgrade-1.0 1 on apache because in http1.0 in this version there is no chunked. Doing so I had no more errors in the browser console.

Problem #2:

[proxy_http:error] [pid 1051:tid 140063488853760] (70007)The specified timeout has expired: [client x.x.x.x:59595] AH01110: error reading response, referer:

I don’t understand why but with r3 the proxy timeout throws out my connection even while using the web app. I solved it by increasing the ProxyTimeout. I don’t have that message in the logs anymore

Problem #3:

Failed to load resource: net::ERR_CONNECTION_CLOSED

I don’t know how to solve this one, I get session disconnection and in the logs/console browser I don’t get any useful information to trace the problem.

In all three cases I can’t find a common cause. It happens at different times, with different timing, in different sections of the program.

I’ve also tried disabling startKeepAliveTimer and stopKeepAliveTime in the xojo framework, but nothing seems to have changed. I think something else changed under the hood in r3 but it’s not in the release notes.

@Greg_O_Lone Can you recommend any configuration? server timeout, web app timeout etc?

Edit: For example now on firefox it gave me this error:
7C8369B9238AEC346C99B3E3ADCB21A276020E3C0F4944287E404473BBF258F2/comm/serverevent was interrupted while loading the page. Xojo.js:6:21007

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