Improved error handling

Cargo.lock

@@ -55,6 +55,7 @@ dependencies = [
  "axum",
  "bytes",
  "dotenvy",
+ "eui48",
  "futures",
  "google-home",
  "impl_cast",
@@ -189,6 +190,17 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "eui48"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "887418ac5e8d57c2e66e04bdc2fe15f9a5407be20b54a82c86bd0e368b709701"
+dependencies = [
+ "regex",
+ "rustc-serialize",
+ "serde",
+]
+
 [[package]]
 name = "flume"
 version = "0.10.14"
@@ -772,6 +784,12 @@ dependencies = [
  "tokio-rustls",
 ]
 
+[[package]]
+name = "rustc-serialize"
+version = "0.3.24"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dcf128d1287d2ea9d80910b5f1120d0b8eede3fbf1abe91c40d39ea7d51e6fda"
+
 [[package]]
 name = "rustls"
 version = "0.20.7"