hello,
Class 'Sellacious Plugin' not found.
afeter install the PKG extended

the error from lib_sellacious.zip.

Hello Alexon,

Have you installed the code package of sellacious first? Extended package of sellacious need to installed after a core package of sellacious. If this error still exists after again installation, let me know the version you're trying to install and send me your site details through DM. I'll take a look at this. To know more about the installation of sellacious check the below link:

https://www.sellacious.com/documentation-v2#/learn/installuninstall/before-you-install

I hope this helps.

Thank You