Custom Servlet deployment error

Hi All,

Good Day!

I am trying to create a servlet and that servlet will return a value from the Appian server. While deploying the plugin in Appian env, I am getting the below error:

[Appian Plugin Hot Deploy] ERROR com.atlassian.plugin.parsers.XmlDescriptorParser - There were problems loading the module 'servlet'. The module and its plugin have been disabled.
 [Appian Plugin Hot Deploy] ERROR com.atlassian.plugin.parsers.XmlDescriptorParser - There was a problem loading the descriptor for module 'servlet' in plugin 'Constant Servlet Plugin'.
There must be at least one path specified: <servlet class="com.example.plugin.ConstantServlet" key="ConstantServlet">
<path>/constantValue</path>
</servlet>
com.atlassian.plugin.util.validation.ValidationException: There must be at least one path specified: <servlet class="com.example.plugin.ConstantServlet" key="ConstantServlet">
<path>/constantValue</path> 

Appian-plugin.xml

<appian-plugin name="Constant Servlet Plugin" key="com.example.plugin">
    <plugin-info>
        <description>To get a key</description>
        <version>1.0.0</version>
        <application-version min="24.2"/>
    </plugin-info>
    <servlet class="com.example.plugin.ConstantServlet" key="ConstantServlet">
        <path>/constantValue</path>
    </servlet>
</appian-plugin>