Question category button error

Hi Guys,
there are at least 3 erros connected to category view:
1. If I click on menue item in frontend "forum" I see at bottom that there is a strange link: www.psychoanalyse-muenchen.de/ menu
2. if I click in the backend/kunena/categories (both button and menu on left side) there is loading and then it links me to my hoster www.psychoanalyse-muenchen.de/administra...&layout=edit&id=2841 saying more or less that this page doesnt exist.
3. if I go to backend/menues/menue item "forum" with category view it leads me again to my hoster ????

what is wrong?

my report:

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Kunena menu details:

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ID	Name	Menutype	Link	Path	In trash
2841	Forum	-main-menu-intern	view=category&layout=list&catid=0	menue	No
2830	Forum	kunenamenu	view=home&defaultmenu=2832	forum	No
2831	Index	kunenamenu	view=category&layout=list	forum/index	No
2832	Aktuell	kunenamenu	view=topics&mode=replies	forum/aktuell	No
2833	Ungelesen	kunenamenu	view=topics&layout=unread	forum/ungelesen	No
2834	Neues Thema	kunenamenu	view=topic&layout=create	forum/neuesthema	No
2835	Ohne Antwort	kunenamenu	view=topics&mode=noreplies	forum/ohneantwort	No
2836	Meine Themen	kunenamenu	view=topics&layout=user&mode=default	forum/meinethemen	No
2837	Profil	kunenamenu	view=user	forum/profil	No
2838	Hilfe	kunenamenu	view=misc	forum/hilfe	No
2839	Suche	kunenamenu	view=search	forum/suche	No
2840	Forum	mainmenu	Itemid=2830	kunena-2019-08-10	No

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1. If I click on menue item in frontend "forum" I see at bottom that there is a strange link: www.psychoanalyse-muenchen.de/ menu

There is a sub menu item in your main menu with a path which ends with /menue.
Remove this menu item (then also from the trash), empty the cache and try it again.

Thnx!
Yes there is a menu item with /menue which is the menu item for the forum! If I remove this I wont have the forum item in the frotend any more. Unfortunately the forum is in registered area - you cannot easily access.

The other prob is that I cant access the categorries neither in the backend.
cheers martin

I cannot even create new menu item with kunena category view! again i land here: www.psychoanalyse-muenchen.de/administra...mainmenu&layout=edit

Hi Guys,
I tried to install new kunena package over old package but installation process stops and there is a blanck page.....