# error.Error.UnreadableAccessRule

- **Module:** error.Error
- **Package:** libtmux
- **Language:** Rust
- **Kind:** constant
- **Source:** https://github.com/libtmux/libtmux-rs/blob/f0e37052c232636b61d095817046e6bfc8f2ca40/crates/libtmux/src/error.rs#L1010
- **Page:** https://libtmux.org/en/rs/latest/reference/error-error-unreadableaccessrule/

A `server-access -l` line matched neither grammar tmux is known to print.

[`crate::Server::access_rules`] decodes the legacy `name (R)`/`name
(W)` grammar and the compound `name (U,R)`/`name (G,W)` grammar a
release with group ACLs uses, by inspecting each line rather than the
detected tmux version. This is the third case: a line this crate
cannot place in either grammar, reported rather than dropped.