Yup, works fine without the slash.

Thank you very much.

I just tried to install Ubooquity 2.0.2 on my Synology via Zerpex docker container (https://github.com/zerpex/ubooquity-docker) and have the same Problem. 

While looking at the admin pages source code I noticed that the call to "admin-res/cryptoparams" returns the source code of the admin page.