Nuget Package Manager not displaying package info in VS2019

My NuGet package "MyTestPackage" is installed in a C# project in Visual Studio 2019. When I view it via the NuGet Package Manager, it does not display the package info in the pane on the right.

I have included screenshots of my package and a package that properly displays the package info in the right pane.

How should I create my package such that the package info displays properly?

MyTestPackage.nuspec file:

<?xml version="1.0" encoding="utf-8"?><package ><metadata><id>MyTestPackage</id><version>1.0.0</version><authors>Ben</authors><requireLicenseAcceptance>false</requireLicenseAcceptance><license type="expression">MIT</license><projectUrl>http://project_url_here_or_delete_this_line/</projectUrl><iconUrl>http://icon_url_here_or_delete_this_line/</iconUrl><description>Package description</description><releaseNotes>Summary of changes made in this release of the package.</releaseNotes><copyright>$copyright$</copyright><tags>Tag1 Tag2</tags><dependencies><group targetFramework=".NETStandard2.1"><dependency id="SampleDependency" version="1.0.0" /></group></dependencies></metadata></package>

I create my package by calling:

nuget pack MyTestPackage.nuspec

Properly displayed package info:

My package: