I think there are some issues with the NextCloud node.
My scenario is to first check if a certain directory exists using the List action on a Folder. This is to avoid errors if I upload a file to a non-existing directory in a later step. The List action returns a json with folders, but it seems not to be part of the regular json datastructure. As such I have no idea how to search through the output.
Next issue is that after the NextCloud list operation the binary data from previous nodes is gone (like in the Read PDF node before it got fixed). Thus making it impossible to upload a file.