Installing packages and (invalid-read-syntax "#<")

[Eric Abrahamsen]

For several weeks, every time I update packages I get the error below.
Recently it seems to be raised once per package updated. Does anyone
know what might be causing this?


Debugger entered--Lisp error: (invalid-read-syntax "#<")
  signal(invalid-read-syntax ("#<"))
  package--with-response-buffer-1("https://melpa.org/packages/"; 
#f(compiled-function () #<bytecode 0x87891e2fe419da4>) :file 
"fountain-mode-20220223.1041.tar" :async nil :error-function #<subr 
F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_73> :noerror nil)
  package-install-from-archive(#s(package-desc :name fountain-mode :version 
(20220223 1041) :summary "Major mode for screenwriting in Fountain markup" 
:reqs ((emacs (24 4)) (seq (2 20))) :kind tar :archive "melpa" :dir nil :extras 
((:commit . "63f29cbd66b9a3d2ff11ff99b36d4d095638d084") (:authors ("Paul W. 
Rankin" . "pwr@bydasein.com")) (:maintainer "Paul W. Rankin" . 
"pwr@bydasein.com") (:keywords "wp" "text") (:url . 
"https://github.com/rnkn/fountain-mode";)) :signed nil))
  package-download-transaction((#s(package-desc :name fountain-mode :version 
(20220223 1041) :summary "Major mode for screenwriting in Fountain markup" 
:reqs ((emacs (24 4)) (seq (2 20))) :kind tar :archive "melpa" :dir nil :extras 
((:commit . "63f29cbd66b9a3d2ff11ff99b36d4d095638d084") (:authors ("Paul W. 
Rankin" . "pwr@bydasein.com")) (:maintainer "Paul W. Rankin" . 
"pwr@bydasein.com") (:keywords "wp" "text") (:url . 
"https://github.com/rnkn/fountain-mode";)) :signed nil)))
  package-install(#s(package-desc :name fountain-mode :version (20220223 1041) 
:summary "Major mode for screenwriting in Fountain markup" :reqs ((emacs (24 
4)) (seq (2 20))) :kind tar :archive "melpa" :dir nil :extras ((:commit . 
"63f29cbd66b9a3d2ff11ff99b36d4d095638d084") (:authors ("Paul W. Rankin" . 
"pwr@bydasein.com")) (:maintainer "Paul W. Rankin" . "pwr@bydasein.com") 
(:keywords "wp" "text") (:url . "https://github.com/rnkn/fountain-mode";)) 
:signed nil) dont-select)