Left user error (error)
Stopped at <exception thrown>
_exception :: e = SomeException (GHC.Exception.D:Exception _
                                                           (GHC.Show.D:Show ...) ....)
                                (GHC.IO.Exception.IOError Nothing GHC.IO.Exception.UserError ....)
_exception = SomeException (GHC.Exception.D:Exception _
                                                      (GHC.Show.D:Show _ _ _) _ _)
                           (GHC.IO.Exception.IOError Nothing GHC.IO.Exception.UserError []
                                                     ['e','r','r','o','r'] Nothing Nothing)
*** Exception: user error (error)
Stopped at <exception thrown>
_exception :: e = SomeException (GHC.Exception.D:Exception _
                                                           (GHC.Show.D:Show ...) ....)
                                (GHC.IO.Exception.IOError Nothing GHC.IO.Exception.UserError ....)
_exception = SomeException (GHC.Exception.D:Exception _
                                                      (GHC.Show.D:Show _ _ _) _ _)
                           (GHC.IO.Exception.IOError Nothing GHC.IO.Exception.UserError []
                                                     ['e','r','r','o','r'] Nothing Nothing)
*** Exception: user error (error)
Stopped at <exception thrown>
_exception :: e = SomeException (GHC.Exception.D:Exception _
                                                           (GHC.Show.D:Show ...) ....)
                                (GHC.IO.Exception.IOError Nothing GHC.IO.Exception.UserError ....)
_exception = SomeException (GHC.Exception.D:Exception _
                                                      (GHC.Show.D:Show _ _ _) _ _)
                           (GHC.IO.Exception.IOError Nothing GHC.IO.Exception.UserError []
                                                     ['e','r','r','o','r'] Nothing Nothing)
Left user error (error)