PyQt QObject::connect: Cannot queue arguments of type 'QTextCursor'?

Question

Python

There is a PyQt5 program that contains a QTextBrowser widget, where text is written via append(string). After four entries, I get the message
QObject::connect: Cannot queue arguments of type 'QTextCursor' (Make sure 'QTextCursor' is registered using qRegisterMetaType().)
How do I fix this?