How to solve the problem with POST/GET requests using quotes?

Question

PHP

After installing the ssl certificate on the server, an error (ERR_CONNECTION_CLOSED) began to appear when trying to get data with quotes ("), or possibly brackets ({) from a POST / GET request
Part of the request - when it is removed, everything works
RESULT: {"anonymousProxy":"No","binCountry":""}
Also works when receiving a request via http protocol
How allow the processing of such characters?
Thank you.

Answer 1

It seems that the error was on the sender's side.
Today earned.
Anyway, thank you all.

Answer 2

Try to base64 encode everything, but this is a radical method, it is better to find the exact reason why it crashes.