Template render error

[newusername2022]

I'm getting this error when I added {% include 'pathtofile/file.html' %} in one of my post.
I'm at lost of where this came from. Is it something wrong with my nunjucks or is it not finding the file from path?

Template render error: (unknown path)
  Error: template not found: pathtofile/file.html
    at Object._prettifyError (...blog/node_modules/nunjucks/src/lib.js:36:11)
    at ...blog/node_modules/nunjucks/src/environment.js:561:19
...