Org protocol capture working for months then stopped suddenly without any proper error message

Question

I have two emacs setups runnning with the help of chemacs2, one with doom config and one with vannila emacs with few configurations in org-mode. This has been running for few months now, and then today I get this following error. Even with (setq debug-on-error t) I get no message/information except this one.

$ emacsclient -c --alternate-editor='' org-protocol://capture://link/title/encoded
Waiting for Emacs...
>>> *ERROR*: Wrong type argument: arrayp, nil  <<<

Here is the startup sequence

$ emacsclient -c --alternate-editor='' "org-protocol://capture://link/title/encoded"
emacsclient: connect: Connection refused

Warning: due to a long standing Gtk+ bug
https://gitlab.gnome.org/GNOME/gtk/issues/221
Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.
Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.
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Tangled 7 code blocks from config.org
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Starting Emacs daemon.
Emacs daemon should have started, trying to connect again
Waiting for Emacs...
*ERROR*: Wrong type argument: arrayp, nil

Answer 1

I think you are using the wrong format for the command. Try this:

emacsclient "org-protocol://capture?template=L&url=www.test.com/SomeLink&title=Something&body=Site"

Note that I defined the template key to be used in the URL. Make sure you have a template with that key. The one I used was:

     ("L" "Protocol Link" entry (file+headline "~/capture-test.org" "Captured")
      "* %? [[%:link][%:description]] \nCaptured On: %U")

It is also worth to read the documentation of the function org-protocol-capture (by typing C-h f org-protocol-capture).