> For the complete documentation index, see [llms.txt](https://docs.pkgforge.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pkgforge.dev/formats/packages/errors-and-quirks.md).

# Errors & Quirks

Common issues with portable packages

Things a portable package can still want from the host, and what to do when it is missing:

* [**FUSE**](/formats/packages/errors-and-quirks/fuse.md): how a package mounts its own payload. Only some runtimes need it installed.
* [**Fonts**](/formats/packages/errors-and-quirks/fonts.md): required to render non-English characters, symbols and emoji.
* [**Kernel user namespaces**](/formats/packages/errors-and-quirks/namespaces.md): used for sandboxing, and as a fallback when FUSE is unavailable.