Countdown to Spain’s constitutional crisis

Is Spain heading for a constitutional crisis? No, I am not asking this because of the Catalonian independence question, talk of a right-wing military coup amongst officers in the army, the totalitarian ambitions of the current socialist-communist government or because of how Covid has worsened already existing polarization (though none of that has helped), no it seems like the legitimacy and respect of the nation’s constitutional court might be in grave danger and that could be the last straw.