Error : Cannot Read Property Isskipself Of Null - After Upgraded From Angular Beta To Rc1

Here are the tsconfig : 'compilerOptions': { 'target': 'es5', 'module': 'commonjs', 'sourceMap': true, 'watch': true, 'removeComments': tru

Solution 1:

I got the same error message and it turned out I had forgotten to add @Injectable() on top of the service I had created.

@Injectable() // <-- missingexportclassMyService(){
    ...
}

Solution 2:

Answering my own question:

Removing Router from directive. solved my problem

Solution 3:

Hard to tell without seeing the code that causes it. Here are discussion about similar error messages

• https://github.com/angular/angular/issues/8519
• https://github.com/angular/angular/issues/8820
• https://github.com/angular/angular/issues/8704

Update

The error message should be improved now with https://github.com/angular/angular/issues/9332