While testing the REST method receiving error

[singhbhavi]

While setting up the REST repository, we noticed that we received an error while trying to test the REST repository, with the following error.

We were Trying to test it by browsing to the App Function - Functions and selected the ManifestGet function
Below was the error we encountered.

{
"ErrorCode": 1,
"ErrorMessage": "An unhandled error occured.\r\nSystem.ArgumentNullException: Value cannot be null. (Parameter 'value')\r\n at System.Boolean.Parse(String value)\r\n at Microsoft.WinGet.RestSource.Functions.Common.CertificateValidationHelper.ValidateAuthentication(HttpRequest req, ILogger log) in D:\a\1\s\src\WinGet.RestSource.Functions\Common\CertificateValidationHelper.cs:line 31\r\n at Microsoft.WinGet.RestSource.Functions.PackageManifestFunctions.ManifestGetAsync(HttpRequest req, String packageIdentifier, ILogger log) in D:\a\1\s\src\WinGet.RestSource.Functions\PackageManifestFunctions.cs:line 245"
}

Request you to kindly suggest and help with solution.