我想在PowerPoint演示文稿中合并大约20张Excel工作表。我创建了一个"Master.xlsm"包含将Excel表复制到PowerPoint演示文稿的VBA。 VBA非常简单，但由于某些原因，我在阅读了几张Excel表格时收到以下错误：

I have about 20 Excel sheets that I want to consolidate in a PowerPoint presentation. I created a "Master.xlsm" that contains the VBA that copies the Excel tables to the PowerPoint presentation. The VBA is pretty straightforward, but for some reason, I get the following error when a couple of Excel sheets have been read: