so i can get https://github.com/matrix-org/synapse-s3-storage-provider to run if i comment out the line telling matrix where to store media on the filesystem but then i see 400s happen
uploading images with media_store_path
commented out works (and breaks old images) but i see 400 errors in the logs for thumbnails
(old thumbnails? not sure)
i have that line uncommented for now