Debugger entered--Lisp error: (error "Hash table data is not a list of even length")
  read("#s(hash-table size 800 test equal rehash-size 2.0 ...")
  #f(compiled-function (key val) #<bytecode -0x13f3bed84869db2>)(mark #<hash-table equal 3/800 0x79a49d>)
  maphash(#f(compiled-function (key val) #<bytecode -0x13f3bed84869db2>) #<hash-table eql 6/100 0x7447a1d>)
  eieio-override-prin1(#<hash-table eql 6/100 0x130029b>)
  #f(compiled-function (this &optional comment) "Write object THIS out to the current stream.\nThis writes out the vector version of this object.  Complex and recursive\nobject are discouraged from being written.\n  If optional COMMENT is non-nil, include comments when outputting\nthis object." #<bytecode -0x143f737923f84cbf>)(#<registry-db registry-db-17e717c> ";; EIEIO PERSISTENT OBJECT")
  apply(#f(compiled-function (this &optional comment) "Write object THIS out to the current stream.\nThis writes out the vector version of this object.  Complex and recursive\nobject are discouraged from being written.\n  If optional COMMENT is non-nil, include comments when outputting\nthis object." #<bytecode -0x143f737923f84cbf>) (#<registry-db registry-db-17e717c> ";; EIEIO PERSISTENT OBJECT"))
  #f(compiled-function (&rest cnm-args) #<bytecode -0x5b9272440f3299a>)(#<registry-db registry-db-17e717c> ";; EIEIO PERSISTENT OBJECT")
  #f(compiled-function (cl--cnm this &optional comment) "Write persistent object THIS out to the current stream.\nOptional argument COMMENT is a header line comment." #<bytecode 0x94a8bbaaf1dcfe2>)(#f(compiled-function (&rest cnm-args) #<bytecode -0x5b9272440f3299a>) #<registry-db registry-db-17e717c> ";; EIEIO PERSISTENT OBJECT")
  apply(#f(compiled-function (cl--cnm this &optional comment) "Write persistent object THIS out to the current stream.\nOptional argument COMMENT is a header line comment." #<bytecode 0x94a8bbaaf1dcfe2>) #f(compiled-function (&rest cnm-args) #<bytecode -0x5b9272440f3299a>) (#<registry-db registry-db-17e717c> ";; EIEIO PERSISTENT OBJECT"))
  #f(compiled-function (&rest args) #<bytecode -0x9f3bc1964a68273>)(#<registry-db registry-db-17e717c> ";; EIEIO PERSISTENT OBJECT")
  apply(#f(compiled-function (&rest args) #<bytecode -0x9f3bc1964a68273>) #<registry-db registry-db-17e717c> ";; EIEIO PERSISTENT OBJECT")
  object-write(#<registry-db registry-db-17e717c> ";; EIEIO PERSISTENT OBJECT")
  #f(compiled-function (this &optional file) "Save persistent object THIS to disk.\nOptional argument FILE overrides the file name specified in the object\ninstance." #<bytecode -0x1b7e073d78b124dc>)(#<registry-db registry-db-17e717c> "~/.gnus.registry.eieio")
  apply(#f(compiled-function (this &optional file) "Save persistent object THIS to disk.\nOptional argument FILE overrides the file name specified in the object\ninstance." #<bytecode -0x1b7e073d78b124dc>) #<registry-db registry-db-17e717c> "~/.gnus.registry.eieio")
  eieio-persistent-save(#<registry-db registry-db-17e717c> "~/.gnus.registry.eieio")
  gnus-registry-save()
  run-hooks(gnus-save-newsrc-hook)
  apply(run-hooks gnus-save-newsrc-hook)
  gnus-run-hooks(gnus-save-newsrc-hook)
  gnus-save-newsrc-file()
  gnus-group-exit()
  funcall-interactively(gnus-group-exit)
  call-interactively(gnus-group-exit nil nil)
  command-execute(gnus-group-exit)