fix: sync command

source/html/sync.go

@@ -140,6 +140,7 @@ func SyncHtml(p string) error {
 				destinationFile[absSource] = append(destinationFile[absSource], d)
 			}
 		}
+	}
 
 	for _, r := range specification.Sync {
 		source := r.Source
@@ -154,7 +155,12 @@ func SyncHtml(p string) error {
 			return err
 		}
 
-			sourceNode := query.MatchFirst(sourceFiles[absSource])
+		s, ok := sourceFiles[absSource]
+		if !ok {
+			return fmt.Errorf("source file isn't found: %s", absSource)
+		}
+
+		sourceNode := query.MatchFirst(s)
 
 		dp := destinationFile[absSource]
 		for _, d := range dp {
@@ -244,8 +250,6 @@ func SyncHtml(p string) error {
 
 	}
 
-	}
-
 	return nil
 }