Select the word "table of contents", right-click-paragraph-select "body" at the outline level, and then right-click table of contents-update fields-update the whole table of contents-OK.
Simply put, anything defined as "body" will not appear in the table of contents. Instead, content with a defined level will appear in the directory. If you find the contents of the body in the table of contents, just change the table of contents and do it like this. There is a simple reason.