Fix test and linter errors

main.go

@@ -5,5 +5,8 @@ import (
 )
 
 func main() {
-	cmd.Execute()
+	err := cmd.Execute()
+	if err != nil {
+		panic(err)
+	}
 }

pkg/cmd/root.go

@@ -13,7 +13,10 @@ var (
 		Long:    `Monica is a CLI tool to manage Network Requests like http, grpc, etc.`,
 		Version: "0.1.0",
 		Run: func(cmd *cobra.Command, args []string) {
-			cmd.Help()
+			err := cmd.Help()
+			if err != nil {
+				panic(err)
+			}
 		},
 		PersistentPreRun: func(cmd *cobra.Command, args []string) {
 			if debug {

pkg/net/http_test.go

@@ -16,7 +16,10 @@ func TestHTTPRequest(t *testing.T) {
 		},
 		Body: "",
 	}
-	res := net.HTTPRequest(req, false)
+	res, err := net.HTTPRequest(req, false)
+	if err != nil {
+		t.Fatal(err)
+	}
 	if res.StatusCode != 200 {
 		t.Fatalf("Expected status code 200, got %d", res.StatusCode)
 	}