Does anyone know what could cause the error "HTTP/2 stream 1 was not closed cleanly: INTERNAL_ERROR (err 2)" or "Stream error in the HTTP/2 framing layer" when using cURL and monitoring? In the browser, this shows up as a blank page or an HTTPS error.
I'm running Nginx and PHP-FPM with FastCGI cache. This issue is new to me, and I have no idea how to fix it. Disabling FastCGI cache completely resolves the problem, which does not solve the underlying cause and of course leads to page not having a caching mechanism like this.
