TCPDF error: Image file has no extension and no type was specified: data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAqAAAAADCAIAAADDSSr7AAAAJ0lEQVRYhe3VAQkAAAwDoDVf9L/HEOxgrr0EANjRRvAAsEbwADCofXmf3n6REH8fAAAAAElFTkSuQmCC