Jira gadget is not working - jira

Question

I am trying to develop a gadget that will ultimately incorporate ChartJS, but I am having issues with the default gadget, as it does not load.
The code I am putting into the attlassian-plugin.xml is the following:
<atlassian-plugin key="${project.groupId}.${project.artifactId}" name="${project.name}" plugins-version="2">
<plugin-info>
<description>${project.description}</description>
<version>${project.version}</version>
<vendor name="${project.organization.name}" url="${project.organization.url}" />
<param name="plugin-icon">images/pluginIcon.png</param>
<param name="plugin-logo">images/pluginLogo.png</param>
</plugin-info>
<!-- add our i18n resource -->
<resource type="i18n" name="i18n" location="report"/>
<!-- add our web resources -->
<web-resource key="report-resources" name="report Web Resources">
<dependency>com.atlassian.auiplugin:ajs</dependency>
<resource type="download" name="report.css" location="/css/report.css"/>
<resource type="download" name="report.js" location="/js/report.js"/>
<resource type="download" name="images/" location="/images"/>
<context>report</context>
</web-resource>
<!-- publish our component -->
<component key="myPluginComponent" class="com.wfs.report.MyPluginComponentImpl" public="true">
<interface>com.wfs.report.MyPluginComponent</interface>
</component>
<!-- import from the product container -->
<component-import key="applicationProperties" interface="com.atlassian.sal.api.ApplicationProperties" />
<webwork1 key="demoaction" name="JTricks Demo Action" class="java.lang.Object">
<actions>
<action name="com.wfs.report.DemoAction" alias="DemoAction">
<view name="input">/templates/input.vm</view>
<view name="success">/templates/joy.vm</view>
<view name="error">/templates/tears.vm</view>
</action>
</actions>
</webwork1>
<atlassian-plugin name="Hello World" key="example.plugin.helloworld" plugins-version="2">
<plugin-info>
<description>A basic gadget module</description>
<vendor name="Atlassian Software Systems" url="http://www.atlassian.com"/>
<version>1.0</version>
</plugin-info>
<gadget key="unique-gadget-key" location="gadget.xml"/>
</atlassian-plugin>
</atlassian-plugin>
and my gadget.xml which i put in the resources directory is:
<?xml version="1.0" encoding="UTF-8" ?>
<Module>
<ModulePrefs title="JIRA Issues" author_email="adent#example.com" directory_title="JIRA Issues"
screenshot="images/screenshot.png"
thumbnail="images/thumbnail.png">
<Optional feature="dynamic-height" />
</ModulePrefs>
<Content type="html">
<![CDATA[
Hello, world!
]]>
</Content>
</Module>
</xml>
which I copied from https://developer.atlassian.com/display/GADGETS/Creating+your+Gadget+XML+Specification
yet I still get

Answer 1

It looks like you have one plugin descriptor nested inside another plugin descriptor. (I'm surprised that it actually passed validation!)
Change this:
<atlassian-plugin name="Hello World" key="example.plugin.helloworld" plugins-version="2">
<plugin-info>
<description>A basic gadget module</description>
<vendor name="Atlassian Software Systems" url="http://www.atlassian.com"/>
<version>1.0</version>
</plugin-info>
<gadget key="unique-gadget-key" location="gadget.xml"/>
</atlassian-plugin>
to just this:
<gadget key="unique-gadget-key" location="gadget.xml"/>