Cardinal Rainer Maria Woelki has acknowledged errors in dealing with sexual abuse in his Cologne archdiocese in western Germany in an interview with the Rheinische Post newspaper published on Tuesday. The 66-year-old archbishop, who is under police investigation for allegedly failing to act against an abusing priest, noted that Cologne was one of the first dioceses to undertake a thorough investigation into the allegations, a process he described as “laborious.” “I certainly made mistakes. I should have communicated better with those involved,” he told the newspaper. The archdiocese has been i…