Undefined variable hierarchyCategoryGroup

Hi, I need to open a map from an image.
To do this I used the plugin's "Show Map in Lightbox" functionality. The map opens correctly but the following error appears below it.
"Notice: Undefined variable: hierarchyCategoryGroup in x:\xampp\htdocs\xxxxxxxxxxxxx\components\com_zhosmmap\views\zhosmmap\tmpl\display_map_data.php on line 2795".
The Zh OpenStreetMap package is updated to version 6.5.4.0.
Unfortunately, being a beginner, I can't get over this mistake. Can anyone help me?
Thank you

Hi.
Sorry for delay.
I moved those variables initialization into the other part. I think I'll fix it.
Check extension manager for new component release

Hi Dima, first of all thank you for your reply and immediate correction.
Again regarding the display of the map in a frame, why is that empty space inserted above and below the map, instead of displaying it centered? Did I make any setting errors?
Also, if you look at the images that I attach, the side scroll bar (superfluous if I could solve the problem) is displayed beyond the bottom side of the frame.
I hope it can help me.
Thanks again
Stefano

Hi Stefano
I don't know how you show map in iframe (by plugin lightbox call) or it is your call.
Tell me more, and if you can give direct link to your page I can analyze it.
Probably template styles or something else