toSignal() cannot be called from within a reactive context

When I subscribe and update the signal getting error as follows. any one pls help me to come out of this issue?

Error detail:

ERROR RuntimeError: NG0602: toSignal() cannot be called from within a reactive context.

Invoking toSignal causes new subscriptions every time. Consider moving toSignal outside of the reactive context and read the signal value where needed.
​

msalInProgressSubscription(): void {
this.subscription.add(
this.msalBroadCastService.inProgress$.subscribe((res: string) => {
if (res === InteractionStatus.None) {
this.msalInProgressNone$.set(true);//error goes away when i remove
}
})
);
}

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