Kindle Scribe - Error communicating with device

I keep getting this error when trying to sideload books to my Kindle Scribe:

calibre, version 7.5.1
ERROR: Error: Error communicating with device

C:\r\src\src\calibre\devices\mtp\windows\content_e numeration.cpp:337:Failed to EnumObjects() of folder from device:[hr=0x802a0006 wCode=0] The requested value cannot be determined.: s10001

Traceback (most recent call last):
File "calibre\gui2\device.py", line 104, in run
File "calibre\gui2\device.py", line 558, in _books
File "calibre\devices\mtp\driver.py", line 230, in books
File "calibre\devices\mtp\driver.py", line 203, in get_driveinfo
File "calibre\devices\mtp\windows\driver.py", line 271, in filesystem_cache
wpd.WPDError: C:\r\src\src\calibre\devices\mtp\windows\content_e numeration.cpp:337:Failed to EnumObjects() of folder from device:[hr=0x802a0006 wCode=0] The requested value cannot be determined.: s10001

Can anyone help?