ERROR Error: InvalidPipeArgument: 'Unable to convert "Invalid Date" into a date' for pipe 'DatePipe'

 This error is date formatting issue you you adding in +'z' for localization the mozilla  firebox are not supported 

first if you to change the format using transform

 var dfsdf = this.datePipe.transform(

        currentdate,

        "yyyy-MM-dd'T'HH:mm:ss'Z'"

      );

then you can do the mozilla are working properly