No overload matches this call. Overload 1 of 15,

Question

No overload matches this call. Overload 1 of 15,

'(url: string, body: any, options: { headers?: HttpHeaders | { [header: string]: string | string[]; }; observe: "events"; params?: HttpParams | { [param: string]: string | string[]; }; reportProgress?: boolean; responseType?: "json"; withCredentials?: boolean; }): Observable<...>', gave the following error.
Type '"text"' is not assignable to type '"json"'.
Overload 2 of 15, '(url: string, body: any, options: { headers?: HttpHeaders | { [header: string]: string | string[]; }; observe: "response"; params?: HttpParams | { [param: string]: string | string[]; }; reportProgress?: boolean; responseType?: "json"; withCredentials?: boolean; }): Observable<...>', gave the following error.
Type '"text"' is not assignable to type '"json"'.
Overload 3 of 15, '(url: string, body: any, options?: { headers?: HttpHeaders | { [header: string]: string | string[]; }; observe?: "body"; params?: HttpParams | { [param: string]: string | string[]; }; reportProgress?: boolean; responseType?: "json"; withCredentials?: boolean; }): Observable<...>', gave the following error.
Type '"text"' is not assignable to type '"json"'.

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09.06.2020