- disable some systemd security features on bionic ([#2219](https://github.com/libretime/libretime/issues/2219))
## :warning: Known issues
The following issues may need a workaround for the time being. Please search the [issues](https://github.com/libretime/libretime/issues) before reporting problems not listed below.
### Missing AAC encoder for Liquidsoap
AAC streams aren't working out of the box because the [current distributions packages of Liquidsoap are lacking a AAC encoder](https://github.com/libretime/libretime/issues/2184). If you need AAC streams, you need to [install Liquidsoap from a different source](https://www.liquidsoap.info/doc-1.4.4/install.html).
### On Ubuntu Bionic, analyzing some FLAC files fails
[On Ubuntu Bionic, analyzing some FLAC files fails with `UnplayableFileError`](https://github.com/libretime/libretime/issues/2218) because of an upstream bug in Liquidsoap. If you encounter this, you should [upgrade to a more recent distribution version](./README.md#distributions-releases-support).