Use translate service in error block

@mdline wrote:

Hello,

I want to use the translate service in an error block like this…

this.backendApi.readData(.subscribe(
       success => xxx,
       error => {
         this.translateService.get(error)['value'];
       },
       ()
     );

But got error for this.translateService

 Cannot read property 'get' of undefined

So how can I use the translateService here?

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