Make sure to provide the MSAL Config in your app module, e.g.
providers: [
{
provide: HTTP_INTERCEPTORS,
useClass: MsalInterceptor,
multi: true
},
{
provide: MSAL_CONFIG,
useFactory: MSALConfigFactory
},
{
provide: MSAL_CONFIG_ANGULAR,
useFactory: MSALAngularConfigFactory
},
MsalService
]