I am sure This is also happen due to avast antivirus, Personally recommending you to read avast safe guide will help you sure.n
General developer forum
No data received ERR_EMPTY_RESPONSE
Yes i found similar error and according my experience almost 97 to 99% this error technically come up on any website due to conflicts and corruptions of the website or web server. I got the complete and easy solution from https://appuals.com/err_empty_response-or-no-data-received-error/.