Checking installed linux libraries

Hello,
I’m following this thread 'cause in Linux Mint 20 Ulyana I cannot install libwebkitgtk-3.
I hope someone may be of help cause there are no candidates for it, as stated above.
If you do have some solution, please make yourself heard.

libwebkit2gtk ?

libwebkit2gtk-4.0-37

My program, which uses an HTMLViewer control, doesn’t start: Xojo complains the lack of libwebkitgtk-3 even if installed there’s a superior version.

Do command:

ldd /path/to/xojo/app

Pleas put the output here.

Did you install: libwebkit2gtk-4.0-37 ??