PhantomJS not found – Quoramatic plugin

Hi, I am using the Quoramatic plugin on my site. I have phantomjs installed on Linux Mint 19.3 Cinnamon, but in settings I get <span class="cr_red12">PhantomJS not found.</span> <span class="cr_red12">I believe the error lies in the program path. </span> <span class="cr_red12">Currently I am using /usr/local/bin/phantomjs</span> <span class="cr_red12">Additionally I have tried the default setting plus many other combinations, but without success.</span> Other than this, the plugin works fine. To assist, <span class="cr_red12">I have enclosed screenshots.</span> Best regards, Stephen Hather