Your comments
Or with /ubooquity/admin
And MAIN thing - you shoudn't use slash at the end!!!
I has the same problem, but for books catalog.
And it happened suddenly, i mean i try to open one books,opds under security was working, but book couldn't be opened. After that my opds catalog brokes on all devices.
Comics catalog still working good.
I tryied to clear books database, but still has problem.
Books were with russian names,in .fb2 extension.
Also, i updated version from 2.1.1 to 2.1.2 and still have the problem
UPD. I remove opds catalog from my mobile app and add again, problem dissapeared. Interesting, that error also shows on ubooquity service.
Another that i mentioned, when i try to get books except pdf & epub, i get error 401(fb2,awz,djvu). Today i try figure out, what request Moon Reader send to server and why it happens.
Customer support service by UserEcho
Guys, don't use slash at the end! just admin without /