fix error message in SendTransaction json-rpc api (#17)

Closes: evmos#785

Solution:
- Remove `stacktrace.Propagate`s, and recover error message in jsonrpc server

changelog

fix error messages

CHANGELOG.md

@@ -43,6 +43,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 - [crypto-org-chain/ethermint#15](https://github.com/crypto-org-chain/ethermint/pull/15) web3 rpc api returns wrong block gas limit
 - [crypto-org-chain/ethermint#16](https://github.com/crypto-org-chain/ethermint/pull/16) fix unwrap context panic in BlockMaxGasFromConsensusParams
 
+### Improvements
+
+- [tharsis#786](https://github.com/tharsis/ethermint/pull/786) Improve error message of `SendTransaction`/`SendRawTransaction` JSON-RPC APIs.
+
 ## [v0.7.2-cronos-2] - 2021-11-17
 
 ### Bug Fixes

app/ante/ante.go

@@ -4,8 +4,6 @@ import (
 	"fmt"
 	"runtime/debug"
 
-	"github.com/palantir/stacktrace"
-
 	tmlog "github.com/tendermint/tendermint/libs/log"
 
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -68,9 +66,10 @@ func NewAnteHandler(
 					)
 
 				default:
-					return ctx, stacktrace.Propagate(
-						sdkerrors.Wrap(sdkerrors.ErrUnknownExtensionOptions, typeURL),
-						"rejecting tx with unsupported extension option",
+					return ctx, sdkerrors.Wrapf(
+						sdkerrors.ErrUnknownExtensionOptions,
+						"rejecting tx with unsupported extension option: %s",
+						typeURL,
 					)
 				}
 
@@ -99,10 +98,7 @@ func NewAnteHandler(
 				authante.NewIncrementSequenceDecorator(ak), // innermost AnteDecorator
 			)
 		default:
-			return ctx, stacktrace.Propagate(
-				sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx),
-				"transaction is not an SDK tx",
-			)
+			return ctx, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "invalid transaction type: %T", tx)
 		}
 
 		return anteHandler(ctx, tx, sim)