```
db/collectionDB.cpp: In member function ‘bool CollectionDB::removeSource(const QString&)’:
db/collectionDB.cpp:853:41: error: ‘const class QString’ has no member named ‘chopped’; did you mean ‘chop’?
auto path = url.endsWith("/") ? url.chopped(1) : url;
^~~~~~~
make: *** [Makefile:1856: collectionDB.o] Error 1
```
This happens on the 0.1.0-beta branch, on Gentoo Linux with Qt 5.9.4.