sticker is not shown at matrix#38

I tried it and compiled it but my stickers are not working (?) The media files appear to be there but nothing is showing, not even in Element.  https://0x416c69.github.io/stickerpicker/web/#pack-tg_name_MyQuby (latest pack) My synapse server is up to date. Is it required to enable `dynamic_thumbnails` in synapse for this to work? When trying to fetch those webp images, I'm getting this error 400: ``` {"errcode":"M_UNKNOWN","error":"Cannot find any thumbnails for the requested media ([b'ag5.ir', b'qAsAxJsWpWXAlGaJaeZrJwQC']). This might mean the media is not a supported_media_format=(image/jpeg, image/jpg, image/webp, image/gif, image/png) or that thumbnailing failed for some other reason. (Dynamic thumbnails are disabled on this server.)"} ``` Pack: https://t.me/addstickers/MyQuby -------- issue by @0x416c69 imported from https://github.com/maunium/stickerpicker/pull/63#issuecomment-1707534031