UIOP/FILESYSTEM refence not found

I am trying to use LQML for an Android app. For the Linux build, I am receiving the following error, which is however recoverable, i.e. CONTINUE works:

`;;; Loading #P"/usr/local/lib/ecl-21.2.1/ecl-curl.fas" ;;; Loading #P"/usr/local/lib/ecl-21.2.1/sockets.fas"

Condition of type: SIMPLE-ERROR Package ((UIOP/FILESYSTEM . #<UIOP/FILESYSTEM package>)) referenced in compiled file NIL but has not been created `

I suspect that I cannot get the Android app running because of this issue. I doublechecked my installation, e.g. the PLANETS example works on Linux, Android64/32.

Any idea for bug fixing would be highly appreciated.