Will only create folders not send book

[Billymaysere]

Crossink, v1.2.9.1
calibre, version 9.8.0
ERROR: Error: Error communicating with device

ERROR:Failed to create file

Traceback (most recent call last):
File "calibre\gui2\device.py", line 110, in run
File "calibre\gui2\device.py", line 661, in _upload_books
File "calibre_plugins.dummy1.driver", line 325, in upload_books
File "calibre_plugins.dummy1.ws_client", line 292, in upload_file
calibre_plugins.dummy1.ws_client.WebSocketError: ERROR:Failed to create file

[Billymaysere]

hmm okay, got it to send other book but it's not liking issac asimov for some reason, probably something to do with my plugboards and series settings?

[Billymaysere]

okay I think it dislikes my template for send to device, template: {#multi_authors:lookup(.,#savepathx,#savepath)}
savepathx: /{series}/{series_index:0>2s| [ | ] }{title:re(:, - )}
savepath: /{author_sort:re((.|&.),)}/{series}/{series_index:0>2s| [ | ] }{title:re(:, - )}

I think it's cause calibre wants to make nested folders and the plugin can't?

[Billymaysere]

if I manually create the folders the way I want them structured it will put the books in them, and create the incorrectly formatted folder too and leave that empty