How to fix Eclipse error ‘still running after platform shutdown’

If you can’t start Eclipse eand you get a pop-up that says you have to look in the .log file in the {your workspace}/.metadata folder, you have probably the following error:

Job found still running after platform shutdown.
Jobs should be canceled by the plugin that scheduled them during shutdown:
org.eclipse.ui.internal.AbstractWorkingSetManager$9

To fix this, you can first try to reboot your computer. If that doesn’t work, go to your workspace folder, step into the .metadata folder and delete the .plugins folder. When you restart Eclipse, Eclipse will rebuild the .plugins.

When Eclipse is restarted, you will notice that your workspace is set to default en your project is gone. Now you have to import your project. In Eclipse, go to file -> import -> Existing Projects into Workspace. Then, choose your project in your workspace and import it. Now you are good to go.