Angular request duplicate if error is throw

I have a weird behavior with my requests. If the request throw an error, I automatically get a second one launched



Here is an example of my request :

this.http.post(environment['url'] + '/ws/verifier/documents/list', {}, {headers}).pipe(
tap((data: any) => {
....
}),
finalize(() => {
....
}),
catchError((err: any) => {
console.debug(err);
this.notify.handleErrors(err);
return of(false);
})
).subscribe();


How can I do to avoid this duplicated request if an error is thrown ?

Thanks

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