Supplied parameters do not match any signature of call target - angular 4

Question

I'm using ngx-translate in service. Exactly in this function.

    @Injectable()
    export class StartService {

    constructor(private translateService: TranslateService) { }

    load(): Promise<any> {
        return this.http
            .get(this.context + 'health', null, true)
            .map(res => {
                const response = res.json() as InvioTelematicoBaseModel
                if (response != null && response.error != null && response.error.esito === 0) {
                  ////////
                } else {
                    this.http.restUpAndRunning = false;
                 this.esitoSectionService.setErrorMessage(this.translateService.instant('IMPOSSIBILE_CONTATTARE_I_SERVIZI_REST')); // here I'm using this.translateService.instant
                }
            })
            .toPromise()
            .catch((err: any) => {
                this.http.restUpAndRunning = false;
                Promise.resolve()
            });
    }
}

When I added this.translateService.instant('IMPOSSIBILE_CONTATTARE_I_SERVIZI_REST') inside this.esitoSectionService.setErrorMessage() I get this error

> [at-loader] Checking finished with 1 errors 
> [at-loader] ./compiled/src/app/app.module.ngfactory.ts:286:31  TS2346: Supplied
> parameters do not match any signature of call target.

Have you any idea please, how to use ngx-translate in this case?

This is function serErrorMessage:

setErrorMessage(message: string) {
    const baseRestResponse = new InvioModel();
    baseRestResponse.error = new ErrorModel();
    baseRestResponse.error.esito = 99
    baseRestResponse.error.error = message;
    this.baseRestResponse.next(baseRestResponse);
}