Error Message starting Manager-linux-x64.Appimage

Lubuntu 22.04.5. Any ideas please. I am not a heavy Linux user yet.

There’s quite a few threads about this in the forum.
That said, your system is looking for some libraries which are not there.
They can be installed:-

Make sure that you have the Universe and Multiverse repositories enabled

Using your package manager to install libwebkit2gtk
or using the terminal
sudo apt install libwebkit2gtk*

(NB. I am assuming that LXQT will be OK with that after the fact, but there might be a further step or two to make GTK apps and LXQT play nicely together that are particular to that desktop environment).

Thanks for the concise answer to my question. I installed the repositories and the libwebkit and can now open the application but it appears LXQT is not happy with GTK because I get a empty window where the business name should be. More learning …

I am also reading up on the repositories thanks to you to improve my Linux knowledge.

I love Manager !!!