How do you calculate centroids in QGIS 3.0? In previous versions, there was an easily accessible tool in the vector geometry toolbar, but it is gone. I've seen ways to do it with Python on Stack Exchange but I am not that good with Python.
I've tried a few Python plugins to no avail. I've repeatedly got the response "Couldn't load plugin 'realcentroid' due to an error when calling its classFactory() method", which I do not understand.