In my code I'm using the classes QgsProject() and QgsVectorLayer(). However PyCharm gives me the following error:
Unresolved reference 'QgsProject' Inspection info: This inspection detects names that should resolve but don't.
The Project Interpreter is "Python3.7(firstplugin) C:\OSGeo4W64\bin\pyton-qgis.bat" which should be correct.
Any ideas how to solve this problem? I think I need to import something but I can't find what