the app will add some remote event receivers to out lists. the app was working well, but today we have removed the app >> test how the site will work without the app >> but when we try to re-install the app we got 1 installation error without any description, as follow:-
so i got confused, as the same app got installed correctly 3 days ago >> i contact Microsoft and they mentioned that i need to specify the installation language for the app, currently the list is empty as follow:-
now to follow what Microsoft has suggested, can anyone advice how i can add a language for the app?? i followed the steps mentioned in this link to create the app @ https://www.enjoysharepoint.com/create-remote-event-receiver-sharepoint-online/.. again the same app (without installation language worked well for us 3 days ago).