Echo Bot showing object reference error

[nahajps]

Describe the issue When executing the code on my local machine, it displays the error message: 'Object reference not set to an instance of an object.

Code Snippet var botInternalHostingProtocol = "https"; if (appSettings.UseLocalDevSettings) - The error displays here. { // if running locally with ngrok // the call signalling and notification will use the same internal and external ports // because you cannot receive requests on the same tunnel with different ports

 // calls come in over 443 (external) and route to the internally hosted port: BotCallingInternalPort
 botInternalHostingProtocol = "http";

 builder.Services.PostConfigure<AppSettings>(options =>
 {
     options.BotInstanceExternalPort = 443;
     options.BotInternalPort = appSettings.BotCallingInternalPort;

 });

} else { //appSettings.MediaDnsName = appSettings.ServiceDnsName; builder.Services.PostConfigure<AppSettings>(options => { options.MediaDnsName = appSettings.ServiceDnsName; }); }

Expected behavior We have to execute and run the Echobot.