Document in Dropbox does not render LaTeX eqs. properly

Feb 2 at 7:12 AM
Edited Feb 2 at 7:13 AM
When I insert LaTeX equations in "Browser Local" documents, they are rendered well.

Like this image: Image

However, if I insert LaTeX equations in "Dropbox" documents, they are not rendered
with an error message:
Error: cannot read: out\math\Document name-math-plain-1.svg
Like this image: Image

If I copy the entire content of the Dropbox document and paste it into a new document in "Browser Local", then the equations are shown well.
However, in a Dropbox document, an error keeps occurring.