Error posting since Dec 27th

The plugin had been working great until Dec. 27th. Since then, I have been getting this in the log file (for example): [2024-12-31 00:16:30] handle_post called for post ID: 50140 [2024-12-31 00:16:30] Post is published and of type 'post', calling post_to_bluesky [2024-12-31 00:16:30] post_to_bluesky called for post ID: 50140 [2024-12-31 00:16:30] Authenticating with Bluesky [2024-12-31 00:16:30] Authentication successful, DID: <obfuscated> [2024-12-31 00:16:30] Attempting to upload image: https://mysite.com/wp-content/uploads/2024/12/50140_generated_1735604188.jpg [2024-12-31 00:16:31] Image uploaded successfully [2024-12-31 00:16:31] Posting to Bluesky with data: {"repo":"<obfuscated>","collection":"app.bsky.feed.post","record":{"text":"","createdAt":"2024-12-31T00:16:30+00:00","embed":{"$type":"app.bsky.embed.external","external":{"uri":"https:\/\/mysite.com\/article-title\/","title":"Article Title","description":"Article excerpt...","thumb":{"$type":"blob","ref":{"$link":"bafkreicmze54vmxtzav2wtq4w6hqcgsnocfnyer5zjmvu3a6enxz655a6y"},"mimeType":"text\/html","size":8177}}}}} [2024-12-31 00:16:31] Failed to post to Bluesky. Status code: 400, Body: {"error":"InvalidMimeType","message":"Wrong type of file. It is text/html but it must match image/*."} I substituted the actual site identity, article title and excerpt in the example above. Am I the only one getting this? How can I troubleshoot further? I don’t believe I have any ability to change the payload that’s being delivered to Bluesky. No changes were made to the site, with the caveat that WP Core, plugins and themes auto-update. The page I need help with: [ log in to see the link] I gave up waiting for an answer and switched to Jetpack I’m sorry for the very late reply – from the logs it seems your images have wrong mime: text/html .. was you able to upload the same type of images before Dec. 27th?