GHC Panic

Building the project exmap I,ve got:

Information:stack: Building 'exmap' ...
Information:stack: /usr/bin/stack build . --stack-yaml /home/andrea/prj/exmap/server/stack.yaml "--ghc-options=-Wall -Werror"
exmap-0.1.0.0: configure (exe)
Configuring exmap-0.1.0.0...
exmap-0.1.0.0: build (exe)
Preprocessing executable 'exmap' for exmap-0.1.0.0...
ghc: panic! (the 'impossible' happened)
  (GHC version 8.0.2 for x86_64-unknown-linux):
	get IfaceTyLit 255
Information:stack: Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
Information:stack: --  While building package exmap-0.1.0.0 using:
      /home/andrea/.stack/setup-exe-cache/x86_64-linux/Cabal-simple_mPHDZzAJ_1.24.2.0_ghc-8.0.2 --builddir=.stack-work/dist/x86_64-linux/Cabal-1.24.2.0 build exe:exmap --ghc-options " -ddump-hi -ddump-to-file"
    Process exited with code: ExitFailure 1
Information:25.10.17 16:19 - Compilation completed with 1 error and 0 warnings in 1s 946ms
Error:stack: Stack build failed with nonzero exit status