fix(recipe): Prevent crash when recipe has no previous tag or release

cli/recipe/sync.go

@@ -42,7 +42,8 @@ local file system.`),
 	ValidArgsFunction: func(
 		cmd *cobra.Command,
 		args []string,
-		toComplete string) ([]string, cobra.ShellCompDirective) {
+		toComplete string,
+	) ([]string, cobra.ShellCompDirective) {
 		switch l := len(args); l {
 		case 0:
 			return autocomplete.RecipeNameComplete()
@@ -131,10 +132,16 @@ likely to change.
 				log.Fatal(err)
 			}
 
-			latestRelease := tags[len(tags)-1]
+			latestRelease := "0.0.0+0.0.0"
+			if len(tags) > 0 {
+				latestRelease = tags[len(tags)-1]
+			}
 			changesTable.Headers(i18n.G("SERVICE"), latestRelease, i18n.G("PROPOSED CHANGES"))
 
-			latestRecipeVersion := versions[len(versions)-1]
+			latestRecipeVersion := latestRelease
+			if len(versions) > 0 {
+				latestRecipeVersion = versions[len(versions)-1]
+			}
 			allRecipeVersions := catl[recipe.Name].Versions
 			for _, recipeVersion := range allRecipeVersions {
 				if serviceVersions, ok := recipeVersion[latestRecipeVersion]; ok {