I'm using Intellij IDEA 2016.1 working in an imported Maven project. Intellij complains only about sonar-maven-plugin.
I have already tried to reimport in maven option but Intellij stills mad with this plugin.
The error message in Intellij is: Unresolved plugin org.codehaus.mojo:sonar-maven-plugin:3.0.1
Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11-10T09:41:47-07:00)
Maven home: /usr/local/apache-maven-3.3.9
Java version: 1.8.0_92, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0_92.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.11.5", arch: "x86_64", family: "mac"