Just look at the first examples, which are 1-to-1 copied from org-protocol
code/documentation.

org-protocol://store-link?url=foo&title=bar
is not working. And this is exactly what store-link is for.

Am Di., 1. Aug. 2023 um 14:01 Uhr schrieb Ihor Radchenko <
yantar92@posteo.net>:

> Michael Dauer <mick.dauer@gmail.com> writes:
>
> > emacsclient "org-protocol://store-link?url=http:123&title=t: w: q&a - r-s
> > (a)"
> > shows *ERROR*: Wrong type argument: arrayp, nil
> >
> > IMO the last example is a fully plausible link. I actually need it to
> > create a link which then calsl e.g. the outlook protocol.
>
> "&" in title is ambiguous - it interferes with "&" in the protocol URI
> scheme. You need to URL-encode "&" to escape the "&" that are actually
> parts of key values.
>
> > ~2 months ago the same links worked fine.
>
> We did not have any significant changes in org-protocol for years.
>
> --
> Ihor Radchenko // yantar92,
> Org mode contributor,
> Learn more about Org mode at <https://orgmode.org/>.
> Support Org development at <https://liberapay.com/org-mode>,
> or support my work at <https://liberapay.com/yantar92>
>