feat: even more errors work

crates/uplc/src/tx/error.rs

@@ -7,9 +7,13 @@ pub enum Error {
     #[error("Only shelley reward addresses can be a part of withdrawals")]
     BadWithdrawalAddress,
     #[error("{0}")]
+    FlatDecode(#[from] flat_rs::de::Error),
+    #[error("{0}")]
     FragmentDecode(#[from] pallas_primitives::Error),
     #[error("{0}")]
     Machine(#[from] machine::Error),
+    #[error("Native script can't be executed in phase-two")]
+    NativeScriptPhaseTwo,
     #[error("Can't eval without redeemers")]
     NoRedeemers,
     #[error("Mismatch in required redeemers: {} {}", .missing.join(" "), .extra.join(" "))]
@@ -21,6 +25,10 @@ pub enum Error {
     ResolvedInputNotFound,
     #[error("A key hash cannot be the hash of a script")]
     ScriptKeyHash,
+    #[error("PlutusV1 cost model not found.")]
+    V1CostModelNotFound,
+    #[error("PlutusV2 cost model not found.")]
+    V2CostModelNotFound,
     #[error("Wrong era, Please use Babbage or Alonzo: {0}")]
     WrongEra(#[from] pallas_codec::minicbor::decode::Error),
 }