Packages `syncthingtray-qt6` and `c++utilities` fail to build

Running `aur sync syncthingtray-qt6` fails on
```
==> Retrieving package files
fetch: syncthingtray-qt6: already up to date
fatal: cannot change to 'syncthingtray-qt6?': No such file or directory
```
Everything worked fine before… Building manually (`git clone … && cd … && aur build -Csrc`) works fine