I hav enot experienced this issue befor now. When I put date column in a gallery, I normally reformat the label to display it in my local format of dd/mm/yyyy. All I do is Text(ThisItem.Created,"dd/mm/yyyy") and this then usually adds Text(ThisItem.Created,"[$-en-AU]dd/mm/yyyy")
Initially no problem but as soon as it add the [$-en-Au} it displays and error Language Code not supported. I am using a SP list. Any Ideas