1*.txt

There is no applicable method for the generic function
  #<STANDARD-GENERIC-FUNCTION YASON:ENCODE (12)>
when called with arguments
  (:NULL).
   [Condition of type SIMPLE-ERROR]

Restarts:
 0: [RETRY] Retry calling the generic function.
 1: [RETRY] Retry SLIME REPL evaluation request.
 2: [*ABORT] Return to SLIME's top level.
 3: [ABORT] Abort thread (#<THREAD "repl-thread" RUNNING {1003F00063}>)

Backtrace:
  0: ((SB-PCL::FAST-METHOD NO-APPLICABLE-METHOD (T)) #<unused argument> #<unused argument> #<STANDARD-GENERIC-FUNCTION YASON:ENCODE (12)> :NULL)
  1: (SB-PCL::CALL-NO-APPLICABLE-METHOD #<STANDARD-GENERIC-FUNCTION YASON:ENCODE (12)> (:NULL))
  2: (SB-INT:SIMPLE-EVAL-IN-LEXENV (YASON:ENCODE (YASON:PARSE "null")) #<NULL-LEXENV>)
  3: (EVAL (YASON:ENCODE (YASON:PARSE "null")))
  4: (SWANK::EVAL-REGION "(yason:encode (yason:parse \"null\"))\n")
  5: ((LAMBDA () :IN SWANK::REPL-EVAL))
  6: (SWANK::TRACK-PACKAGE #<CLOSURE (LAMBDA # :IN SWANK::REPL-EVAL) {10052EFC9B}>)
  7: (SWANK::CALL-WITH-RETRY-RESTART "Retry SLIME REPL evaluation request." #<CLOSURE (LAMBDA # :IN SWANK::REPL-EVAL) {10052EFBBB}>)
  8: (SWANK::CALL-WITH-BUFFER-SYNTAX NIL #<CLOSURE (LAMBDA # :IN SWANK::REPL-EVAL) {10052EFB8B}>)
  9: (SWANK::REPL-EVAL "(yason:encode (yason:parse \"null\"))\n")
 10: (SB-INT:SIMPLE-EVAL-IN-LEXENV (SWANK:LISTENER-EVAL "(yason:encode (yason:parse \"null\"))\n") #<NULL-LEXENV>)
 11: (EVAL (SWANK:LISTENER-EVAL "(yason:encode (yason:parse \"null\"))\n"))
 12: (SWANK:EVAL-FOR-EMACS (SWANK:LISTENER-EVAL "(yason:encode (yason:parse \"null\"))\n") "COMMON-LISP-USER" 10)
 13: (SWANK::PROCESS-REQUESTS NIL)
 14: ((LAMBDA () :IN SWANK::HANDLE-REQUESTS))
 15: ((LAMBDA () :IN SWANK::HANDLE-REQUESTS))
 16: (SWANK-BACKEND::CALL-WITH-BREAK-HOOK #<FUNCTION SWANK:SWANK-DEBUGGER-HOOK> #<CLOSURE (LAMBDA # :IN SWANK::HANDLE-REQUESTS) {1003F0810B}>)
 17: ((FLET SWANK-BACKEND:CALL-WITH-DEBUGGER-HOOK :IN "/usr/share/common-lisp/source/swank/swank-sbcl.lisp") ..)
 18: (SWANK::CALL-WITH-BINDINGS ..)
 19: (SWANK::HANDLE-REQUESTS #<SWANK::CONNECTION {1006A231C3}> NIL)
 20: ((FLET #:WITHOUT-INTERRUPTS-BODY-240492 :IN SB-THREAD:MAKE-THREAD))
 21: ((FLET SB-THREAD::WITH-MUTEX-THUNK :IN SB-THREAD:MAKE-THREAD))
 22: ((FLET #:WITHOUT-INTERRUPTS-BODY-90114 :IN SB-THREAD::CALL-WITH-MUTEX))
 23: (SB-THREAD::CALL-WITH-MUTEX ..)
 24: (SB-THREAD::INITIAL-THREAD-FUNCTION)
 25: ("foreign function: call_into_lisp")
 26: ("foreign function: new_thread_trampoline")