gvfs works in Krusader, with an Android phone, but "can't write into ..." when trying to copy a file into it

I use Krusader to access my Android phone and copy files to it. The path is this /run/user/1000/gvfs/mtp:host=/ Firstly, it won't display the content of that path, even though it's been mounted, unless I first access via Thunar. Only after that Krusader will display the content of a phone and its SD card. Secondly,when I'm attempting to copy a file, it'll throw an error "couldn't write into ... /downloads/123.txt" How to fix all that?