Error with full page figure caption using fltpage2 package

[utsarga45]

Hi there, I am currently writing my thesis in Overleaf using the Dissertate package and was having an issue with correctly displaying full page figures (with the captions appearing in the preceding page). The figure appears fine but the caption does not appear in the page before (or anywhere). I seem to be getting the following errors:

LaTeX Error: Environment FPfigure undefined.
Package caption Error: \caption outside float.

How do I resolve these issues? I understand that this requires the fltpage2 package and I do seem to have the fltpage2.sty file uploaded in overleaf so Im not sure what the issue is. Is there somewhere I need to declare it as /usepackage?

Thanks a lot for your help, I appreciate it!

[elbo001]

Just in case anyone else runs into the same problem:

\usepackage{path to fltpage2.sty}

works!