Upon updating Fedora I got the error:
```
Cannot enable multiple streams for module 'maven'
```
This can be solved by running:
```
dnf module reset <name>
```
L. Wang, Y. Wu, X. Zhuang, und F. Soong. Proceedings of the 2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Seite 4580-4583. Prague, Czech Republic, (Mai 2011)