i just run my app with “ionic serve” command and i get this error
ionic-hello-world@ watch C:\Users\adirz\myapps\eventapp
ionic-app-scripts watch
[14:39:48] ionic-app-scripts 0.0.30
[14:39:48] watch started …
[14:39:48] build dev started …
[14:39:48] clean started …
[14:39:48] clean finished in 10 ms
[14:39:48] copy started …
[14:39:48] bundle dev started …
I’m the Hulk
[14:39:49] lint started …
[14:39:49] copy finished in 253 ms
[14:39:49] lint finished in 590 ms
[14:39:52] C:/Users/adirz/myapps/eventapp/src/app/app.component.ts(26,11): error TS1005: ‘;’ expected.
[14:39:52] C:/Users/adirz/myapps/eventapp/src/app/app.component.ts(26,18): error TS1144: ‘{’ or ‘;’ expected.
[14:39:52] C:/Users/adirz/myapps/eventapp/src/app/app.component.ts(26,38): error TS1138: Parameter declaration expected.
[14:39:52] C:/Users/adirz/myapps/eventapp/src/app/app.component.ts(34,4): error TS1005: ‘;’ expected.
[14:39:52] C:/Users/adirz/myapps/eventapp/src/app/app.component.ts(35,23): error TS1005: ‘,’ expected.
[14:39:52] C:/Users/adirz/myapps/eventapp/src/app/app.component.ts(35,35): error TS1005: ‘;’ expected.
[14:39:52] C:/Users/adirz/myapps/eventapp/src/app/app.component.ts(43,1): error TS1128: Declaration or statement expected.
[14:39:52] bundle dev failed: Error transforming C:/Users/adirz/myapps/eventapp/src/app/app.component.ts with ‘ion-compiler’ plugin: There were TypeScript errors transpiling
[14:39:52] Error: Error transforming C:/Users/adirz/myapps/eventapp/src/app/app.component.ts with ‘ion-compiler’ plugin: There were TypeScript errors transpiling
at Object.transpile (C:\Users\adirz\myapps\eventapp\node_modules@ionic\app-scripts\dist\transpile.js:39:15)
at Object.transform (C:\Users\adirz\myapps\eventapp\node_modules@ionic\app-scripts\dist\plugins\ion-compiler.js:26:36)
at C:\Users\adirz\myapps\eventapp\node_modules\rollup\dist\rollup.js:8270:35
Running live reload server: http://localhost:35729
Watching: www//*, !www/lib//, !www/**/.map
√ Running dev server: http://localhost:8100
Ionic server commands, enter:
restart or r to restart the client app from the root
goto or g and a url to have the app navigate to the given url
consolelogs or c to enable/disable console log output
serverlogs or s to enable/disable server log output
quit or q to shutdown the server and exit
ionic $
this is my app.module.ts- i don’t see any something missing like the cmd shows the errors
import { NgModule } from ‘@angular/core’;
import { IonicApp, IonicModule } from ‘ionic-angular’;
import { MyApp } from ‘./app.component’;
// Import pages
import { HomePage } from ‘…/pages/home/home’;
import { LoginPage } from ‘…/pages/login/login’;
import { ResetPasswordPage } from ‘…/pages/reset-password/reset-password’;
import { SignupPage } from ‘…/pages/signup/signup’;
// Import providers
import { AuthData } from ‘…/providers/auth-data’;
@NgModule({
declarations: [
MyApp,
HomePage,
LoginPage,
ResetPasswordPage,
SignupPage
],
imports: [
IonicModule.forRoot(MyApp)
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
HomePage,
LoginPage,
ResetPasswordPage,
SignupPage
],
providers: [
AuthData,
]
})
export class AppModule {}
I am also getting an error regarding the ion-complier. The error I get when running the ionic serve cmd:
bundle dev failed: Error transforming //src/app/app.component.ts with ‘ion-compiler’ plugin: rollup-plugin-typescript: Cannot read property ‘0’ of null; when processing: '//src/app/app.component.ts’
@Hellinga i solved this issue, just check your app.component.ts
i did a mistake in my constructor. maybe share yours and i can help u
This is my app.component.ts code:
import { Component } from '@angular/core';
import { Platform } from 'ionic-angular';
import { StatusBar } from 'ionic-native';
//pages
import {TabsPage} from '../pages/tabs/tabs';
import {WelcomePage} from '../pages/welcome/welcome';
//provider
import {Appuser} from '../providers/appuser/appuser';
@Component({
templateUrl: 'app.html',
})
export class MyApp {
public rootPage: any = TabsPage;
public welcomePage: any = WelcomePage;
constructor(
platform: Platform,
public user: Appuser
){
platform.ready().then(() => {
StatusBar.styleDefault();
});
}
}
}
Here is my app.module.ts code:
import { NgModule } from '@angular/core';
import { IonicApp, IonicModule } from 'ionic-angular';
//pages
import { MyApp } from './app.component';
import {ClientPage} from '../pages/client/client';
import {DashboardPage} from '../pages/dashboard/dashboard';
import {EditexercisesPage} from '../pages/editexercises/editexercises';
import {NewClientPage} from '../pages/newclient/newclient';
import {SettingsPage} from '../pages/settings-page/settings-page';
import {TabsPage} from '../pages/tabs/tabs';
import {WelcomePage} from '../pages/welcome/welcome';
//providers
import {Appuser} from '../providers/appuser/appuser';
import {ClientProvider} from '../providers/clientprovider/clientprovider';
import {CurrentClient} from '../providers/currentclient/currentclient';
import {Exerciseprovider} from '../providers/exerciseprovider/exerciseprovider';
import {ImageProvider} from '../providers/image/image';
import {Config} from '../providers/config';
//components
import {ExerciseDataModel} from '../components/ExerciseDataModel';
//pipes
// import {SearchClientFilter} from '../pipes/searchClientFilter';
// import {SearchExerciseFilter} from '../pipes/searchExerciseFilter';
@NgModule({
declarations: [
MyApp,
ClientPage,
DashboardPage,
EditexercisesPage,
NewClientPage,
SettingsPage,
TabsPage,
WelcomePage,
ExerciseDataModel
// SearchClientFilter,
// SearchExerciseFilter
],
imports: [
IonicModule.forRoot(MyApp)
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
ClientPage,
DashboardPage,
EditexercisesPage,
NewClientPage,
SettingsPage,
TabsPage,
WelcomePage
],
providers: [
Exerciseprovider,
ClientProvider,
CurrentClient,
Appuser,
Config,
ImageProvider
]
})
export class AppModule {}
Let me know if you see the error 
@adirzoari:: here the full error message:
bundle dev failed: Error transforming //src/app/app.component.ts with ‘ion-compiler’ plugin: rollup-plugin-typescript: Cannot read property ‘0’ of null; when processing: '//src/app/app.component.ts’
[16:33:25] Error: Error transforming /**/src/app/app.component.ts with 'ion-compiler' plugin: rollup-plugin-typescript: Cannot read property '0' of null; when processing: '/**/src/app/app.component.ts'
at getErasedCode (/**/node_modules/@ionic/app-scripts/dist/util/typescript-helpers.js:68:15)
at Object.fixExportClass (/**/node_modules/@ionic/app-scripts/dist/util/typescript-helpers.js:43:21)
at Object.transpile (**p/node_modules/@ionic/app-scripts/dist/transpile.js:17:63)
at Object.transform (**/node_modules/@ionic/app-scripts/dist/plugins/ion-compiler.js:26:36)
at **/node_modules/rollup/dist/rollup.js:8270:35
Did you find a solution for this problem? I am having the same issue.
Hey, I received the same error while doing the syntax error!
I noticed you closed two times in app.component.ts. So check you closing brases at the end of the file
There were more than one problem with my project 
The one probably causing this issue was that I noticed that my html pages used variables like client.firstname but they were not correctly (?) defined in the .ts file (client: any[] = []). By adding *ngIf=client in my html file I overcome this problem.
Hope this helps