Fix epochs CLI (#3700) (#3724)

(cherry picked from commit d69dd69)

Co-authored-by: Dev Ojha <ValarDragon@users.noreply.github.com>

osmoutils/osmocli/query_cmd_wrap.go

@@ -133,6 +133,10 @@ func GetParams[reqP proto.Message, querier any](moduleName string,
 func callQueryClientFn(ctx context.Context, fnName string, req proto.Message, q any) (res proto.Message, err error) {
 	qVal := reflect.ValueOf(q)
 	method := qVal.MethodByName(fnName)
+	if (method == reflect.Value{}) {
+		return nil, fmt.Errorf("Method %s does not exist on the querier."+
+			" You likely need to override QueryFnName in your Query descriptor", fnName)
+	}
 	args := []reflect.Value{
 		reflect.ValueOf(ctx),
 		reflect.ValueOf(req),

x/epochs/client/cli/query.go

@@ -21,13 +21,14 @@ func GetCmdEpochInfos() (*osmocli.QueryDescriptor, *types.QueryEpochsInfoRequest
 		Use:   "epoch-infos",
 		Short: "Query running epoch infos.",
 		Long: `{{.Short}}{{.ExampleHeader}}
-		{{.CommandPrefix}}`}, &types.QueryEpochsInfoRequest{}
+{{.CommandPrefix}}`,
+		QueryFnName: "EpochInfos"}, &types.QueryEpochsInfoRequest{}
 }
 
 func GetCmdCurrentEpoch() (*osmocli.QueryDescriptor, *types.QueryCurrentEpochRequest) {
 	return &osmocli.QueryDescriptor{
 		Use:   "current-epoch",
 		Short: "Query current epoch by specified identifier.",
 		Long: `{{.Short}}{{.ExampleHeader}}
-		{{.CommandPrefix}} day`}, &types.QueryCurrentEpochRequest{}
+{{.CommandPrefix}} day`}, &types.QueryCurrentEpochRequest{}
 }