Device is a Samsung Galaxy S10. OS is Debian SID ( unstable ).
The error message in title was from nautilus ( file manager ).
All other locations within device are listed fine in the file manager. But the below "Music" location ( has 380 files )
mtp://SAMSUNG_SAMSUNG_Android_RXXX204K1CT/Phone/Music
is loading forever and the "could not get object handles" error message is displayed. after few minutes ( approx 5 mins ). Please refer attachment. This is 100% reproducible. I can access 380 files in my Galaxy without any issues.
Anonymous
May be length of transfer data is exactly 512 bytes.