Place the cursor on the blank page
Press Backspace or Delete
If the page is after a table, click the paragraph mark after the table and set it to 1 pt
Show formatting marks with Ctrl+Shift+8 or Cmd+8
Delete extra paragraph marks, page breaks, or section breaks
Remove any manual page breaks
Check for hidden content or empty paragraphs
If needed, reduce the font size of the final paragraph mark to 1 pt
Save the document and check the page again