[Word] #() error occurs after Word formula is exported to PDF

Question

Word editing formula is as follows:

After exporting PDFDisplay:

All the steps are done correctly, Baidu has been trying for a long time, but still no results.

Wrong method

Do not export using Word's PDF plugin

After exporting in this way, the error at the beginning of the text will inevitably appear.

The Right Way

Save the file as, and select the PDF format to save.