fix(x/group): proper address rendering in error (backport #22425) (#2…

…2431)

Co-authored-by: Julien Robert <julien@rbrt.fr>

x/group/keeper/proposal_executor.go

@@ -70,7 +70,13 @@ func ensureMsgAuthZ(msgs []sdk.Msg, groupPolicyAcc sdk.AccAddress, cdc codec.Cod
 				if err != nil {
 					return errorsmod.Wrapf(sdkerrors.ErrUnauthorized, "msg does not have group policy authorization; error retrieving group policy address")
 				}
-				return errorsmod.Wrapf(sdkerrors.ErrUnauthorized, "msg does not have group policy authorization; expected %s, got %s", groupPolicyAddr, acct)
+
+				acctStr, _ := addressCodec.BytesToString(acct)
+				if acctStr == "" {
+					acctStr = "unmarshalable address"
+				}
+
+				return errorsmod.Wrapf(sdkerrors.ErrUnauthorized, "msg does not have group policy authorization; expected %s, got %s", groupPolicyAddr, acctStr)
 			}
 		}
 	}