'Element implicitly has an 'any' type because expression of type 'string' can't be used to index type In Angular ForkJoin operator

I have used the angular forkJoin operator to call several service functions. The code is below:

private populateLists(): void {
        forkJoin({
            countries: this.countryService.getCountryLists(),
            floorLists: this.variableService.getFloorLists(),
            memberTypes: this.variableService.getMemberTypeLists(),
            memberCategories: this.variableService.getMemberCategoryLists(),
            businessTypes: this.variableService.getBusinessTypeLists(),
            voterRelations: this.variableService.getVoterRelationLists(),
            bloodGroups: this.variableService.getBloodGroupLists(),
            designations: this.variableService.getDesignations()
        }).subscribe(data => {
            for (const [key, value] of Object.entries(data)) {
                this[key] = value;
            }
        });
    }

Now I am getting error in this line: this[key] = value. The error is:

Element implicitly has an 'any' type because expression of type 'string' can't be used to index type 'MemberDetailsComponent'. No index signature with a parameter of type 'string' was found on type 'MemberDetailsComponent'.ts(7053)

angulartypescriptcastingobservable


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