ERROR:
Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to
This fixed the same issue for me: My eclipse is installed in /usr/local/bin/eclipse
/usr/local/bin/eclipse
1) Changed permission for eclipse from root to owner: sudo chown -R $USER eclipse
sudo chown -R $USER eclipse
2) Right click on project/Maven right click on Update Maven select Force update maven project
project/Maven
Update Maven
Force update maven project