Recently, I am getting some error. when I update my angular project 9.0.7 to 9.1.9. This time i get this type of errors.
ERROR in ../AppState/node_modules/@angular/core/core.d.ts:256:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 1 type argument(s).
256 static ɵfac: ɵngcc0.ɵɵFactoryDef<ApplicationInitStatus, [{ optional: true; }]>;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../AppState/node_modules/@angular/core/core.d.ts:439:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 1 type argument(s).
439 static ɵfac: ɵngcc0.ɵɵFactoryDef<ApplicationRef, never>;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../AppState/node_modules/@angular/core/core.d.ts:785:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 1 type argument(s).
785 static ɵfac: ɵngcc0.ɵɵFactoryDef<Compiler, never>;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../AppState/node_modules/@angular/core/core.d.ts:5028:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 1 type argument(s).
5028 static ɵfac: ɵngcc0.ɵɵFactoryDef<PlatformRef, never>;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../AppState/node_modules/@angular/core/core.d.ts:6414:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 1 type argument(s).
6414 static ɵfac: ɵngcc0.ɵɵFactoryDef<SystemJsNgModuleLoader, [null, { optional: true; }]>;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../AppState/node_modules/@angular/core/core.d.ts:6611:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 1 type argument(s).
6611 static ɵfac: ɵngcc0.ɵɵFactoryDef<Testability, never>;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../AppState/node_modules/@angular/core/core.d.ts:6656:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 1 type argument(s).
6656 static ɵfac: ɵngcc0.ɵɵFactoryDef<TestabilityRegistry, never>;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../AppState/node_modules/@angular/core/core.d.ts:9555:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 1 type argument(s).
9555 static ɵfac: ɵngcc0.ɵɵFactoryDef<ɵConsole, never>;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../AppState/node_modules/@datorama/akita/lib/store.d.ts:138:18 - error TS2314: Generic type 'ɵɵFactoryDef' requires 1 type argument(s).
138 static ɵfac: ɵngcc0.ɵɵFactoryDef<Store<any>, never>;
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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I could not understand what is the problem. please help.