Incorrect Permission Error When Deploying to Heroku-18

[checktest82]

I created a fork here ( https://github.com/checktest82/heroku-firefox-geckofork ) to fix an error that was stated here: #16

I deployed my application to test here: https://github.com/checktest82/test-package

I added all environment variables to my slug: https://i.imgur.com/FUtgcLl.png

Yet when I run it, Im thrown this error:

{"error":"Message: 'geckodriver' executable may have wrong permissions. \n","status":0}

Which you can see live: https://test66711.herokuapp.com/get

How do I fix?

Also to add, Heroku-20 does not work with this (throws an error if you try to deploy to a slug with heroku-20)

[github-actions]

Thank you for using heroku-integrated-firefox-geckodriver. Preliminary examination of your issue is underway' first issue

[checktest82]

Tried doing the #9 (comment) fix on my main project as shown here: checktest82/test-package@11de98a but now I get:

"Message: 'geckodriver' executable needs to be in PATH. \n"

It is supposed to be in path already: https://imgur.com/FUtgcLl

[flazouh]

Can't make it work aswell...