1. Open Eclipse, the one should have Liferay IDE in it.
2. Create a liferay-maven-theme project. Go to File>New>Project>Maven Project>Next>Next, choose one liferay-theme-archetype no matter what the Version is, then Next. Add Group Id and Artifact Id, then Finish.
3. Open pom.xml file in the project. Add <properties> tag(you can refer to the Attachment maven-theme error1.png),then Save.
4. Right click the project, select Maven>Update Maven Project> click OK.
– In the pom.xml file, no errors, but there is a warning "Error installing Liferay theme facet:null".