bug#41493: 26.3; Error in MPC directory browser

[Stefan Kangas]

Matthieu Lemerre <racin@free.fr> writes:

> While discovering MPC I customized the MPC host variable, started MPC,
> clicked on the Menu to "Add a new browser", then selected Directory.
> If I click on one of my directories (that mostly contain
> subdirectories), I get the following error:
>
> cl--assertion-failed: Assertion failed: (or (null alist) (memq (caar alist) 
> mpc--proc-alist-to-alists-starters))

Copying in the maintainer of mpd.el here.  Any ideas?

Best regards,
Stefan Kangas