diff --git a/.gitignore b/.gitignore
index cc5d70dff9..3c27c8bc55 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,4 +23,4 @@ test/test-project/node_modules/*
 test/test-project/node_modules/@asyncapi/*
 !test/test-project/node_modules/@asyncapi/html-template/
 test/test-project/package-lock.json
-test/test-project/verdaccio/storage/.verdaccio-db.json
\ No newline at end of file
+test/test-project/verdaccio/storage/
\ No newline at end of file
diff --git a/lib/generator.js b/lib/generator.js
index d8c3b0824b..53c155e036 100644
--- a/lib/generator.js
+++ b/lib/generator.js
@@ -374,6 +374,13 @@ class Generator {
       if (!document) {
         const err = new Error('Input is not a correct AsyncAPI document so it cannot be processed.');
         err.diagnostics = diagnostics;
+        for (const diag of diagnostics) {
+          console.error(
+            `Diagnostic err: ${diag['message']} in path ${JSON.stringify(diag['path'])} starting `+
+            `L${diag['range']['start']['line'] + 1} C${diag['range']['start']['character']}, ending `+
+            `L${diag['range']['end']['line'] + 1} C${diag['range']['end']['character']}`
+          );
+        }
         throw err;
       } else {
         this.asyncapi = document;
@@ -1055,4 +1062,4 @@ class Generator {
 Generator.DEFAULT_TEMPLATES_DIR = DEFAULT_TEMPLATES_DIR;
 Generator.TRANSPILED_TEMPLATE_LOCATION = TRANSPILED_TEMPLATE_LOCATION;
 
-module.exports = Generator;
\ No newline at end of file
+module.exports = Generator;
diff --git a/test/test-project/test-registry.test.js b/test/test-project/test-registry.test.js
index 7d07fa8d93..a886fe50d5 100644
--- a/test/test-project/test-registry.test.js
+++ b/test/test-project/test-registry.test.js
@@ -4,31 +4,29 @@
 
 const { readFile } = require('fs').promises;
 const path = require('path');
-const Generator = require('@asyncapi/generator');
-const templateName = '@asyncapi/html-template';
-const tempOutputResults = '../temp/integrationTestResult';
+const Generator = require('../lib/generator');
+const dummySpecPath = path.resolve(__dirname, './docs/dummy.yml');
+const crypto = require('crypto');
+const mainTestResultPath = 'test/temp/integrationTestResult';
+//we do not want to download chromium for html-template if it is not needed
+process.env['PUPPETEER_SKIP_CHROMIUM_DOWNLOAD'] = true;
 
-console.log = jest.fn();
-
-describe('Testing if html template can fetch from private repository', () => {
-  jest.setTimeout(200000);
+describe('Integration testing generateFromFile() to make sure the result of the generation is not changend comparing to snapshot', () => {
+  const generateFolderName = () => {
+    //you always want to generate to new directory to make sure test runs in clear environment
+    return path.resolve(mainTestResultPath, crypto.randomBytes(4).toString('hex'));
+  };
 
-  let ArboristMock;
-  let arboristMock;
+  jest.setTimeout(60000);
 
-  beforeEach(() => {
-    ArboristMock = require('@npmcli/arborist');
-    arboristMock = new ArboristMock();
+  it('generated using private registory', async () => {
+    const outputDir = generateFolderName();
+    const generator = new Generator('@asyncapi/html-template', outputDir, 
+         { forceWrite: true, templateParams: { singleFile: true }, 
+         registry: {url: 'http://localhost:4873/', username: 'admin', password: 'nimbda'}});
+    await generator.generateFromFile(dummySpecPath);
+    const file = await readFile(path.join(outputDir, 'index.html'), 'utf8');
+    expect(file).toMatchSnapshot();
   });
 
-  it('fetching the html template from the private repository', async () => {
-    //you always want to generate to new directory to make sure test runs in clear environment
-    const outputDir = path.resolve(tempOutputResults, Math.random().toString(36).substring(7));
-    //we setup the generator to pick the template file that is present in the private repository
-    const generator = new Generator(templateName, outputDir, { forceWrite: true, debug: true, templateParams: { singleFile: true }, registry: {url: 'http://localhost:4873/', username: 'admin', password: 'nimda'}});
-    
-    await generator.installTemplate();
-
-    expect(arboristMock.reify).toHaveBeenCalledTimes(1);
-  });
 });