I'm loading about 200 files by code:

jQuery.ajax({url:'markery/'+pliki[z], success: function(xml){

Without SSL all working ok but when I turn on certificate on chrome and edge I get error:

GET https://myfile.xml net::ERR_CONNECTION_CLOSED

Some files are not loaded and it happens on random one time those files later different ones. Can anyone help me I have no idea why chrome/edge block connection and how to prevent this.