Morocco has refused entry to passengers on a German cruise liner after some tested positive for Covid-19, Moroccan media reported Wednesday. The Mein Schiff Herz, owned by German tourism giant TUI and capable of carrying 1,900 passengers plus crew, had been meant to dock in Tangiers on the Gibraltar Straits on Tuesday morning on its way to Lisbon. But Moroccan authorities barred passengers from disembarking due to “a report received by the Moroccan health authorities which indicates an increase in cases of Covid-19 infection among passengers,” according to news website Le360. Morocco on Tuesda…