title: Unresolved requirement: Import-Package: com.liferay.portal.kernel.portlet.bridges.mvc; version="[2.0.0,3.0.0)"
body: <p>I have downloaded <a href="https://www.liferay.com/downloads-community" rel="nofollow noreferrer">Liferay 7.3.5 Community Edition from here</a> and trying to deploy a HelloWorld portlet for testing purposes. It is bundled with Tomcat.
  I am using Liferay Developer Studio (the same old Eclipse on steroids) for developing and deploying the portlet. Version 3.8.1.202004240132-ga2
  I have also created a Server like in <a href="https://help.liferay.com/hc/en-us/articles/360018158951-Installing-a-Server-in-Liferay-Developer-Studio-" rel="nofollow noreferrer">this link</a> - the server is using the tomcat 9.0.37 from the already downloaded bundle.</p>
  <p>After steps above, I have followed steps from <a href="https://help.liferay.com/hc/en-us/articles/360018156851-Starting-Module-Development" rel="nofollow noreferrer">here</a> to create a Module Project and to deploy it on the already started tomcat server. The portlet appears in the deployed section, but with a red &quot;x&quot; near it:
  <a href="https://i.stack.imgur.com/ne7QO.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ne7QO.png" alt="enter image description here" /></a></p>
  <p>I went to add the portlet/widget in a widget page that I have created for this purpose, but I could not find the portlet:
  <a href="https://i.stack.imgur.com/sQZ6V.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sQZ6V.png" alt="enter image description here" /></a></p>
  <p>Then, logged in with an admin user, I went to Control Panel -&gt; App Manager and searched for my Portlet. It appears as &quot;Installed&quot; and I can activate it. After I hit &quot;Activate&quot;, Eclipse logs start writing: <code>ERROR [http-nio-8080-exec-8][PortletServlet:119] javax.portlet.PortletException: org.osgi.framework.BundleException: Could not resolve module: VictorTestPortlet [2716]_  Unresolved requirement: Import-Package: com.liferay.portal.kernel.portlet.bridges.mvc; version=&quot;[2.0.0,3.0.0)&quot;_ [Sanitized]</code></p>
  <p><a href="https://i.stack.imgur.com/oHndD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/oHndD.png" alt="enter image description here" /></a></p>
  <p><strong>The Question</strong>: what is causing this error ?</p>