help-debbugs@gnu.org (GNU bug Tracking System) writes:

> Marius Bakke <mbakke@fastmail.com> skribis:
>
>> ERROR: In procedure put-bytevector:
>> In procedure put-bytevector: Wrong type argument in position 1 (expecting open output port): #<closed: file 7fe4c3a77620>
>
> This is now fixed in 8ed597f4a261fe188de82cd1f5daed83dba948eb.
>
> Thanks for investigating!

Thanks for the lightning-quick fix!  :-)