Cannot post new photo with empty caption

[ansuz]

Posting with no caption returns the error: The caption must be a string.

[kpcyrd]

The fix for this is probably very similar to #114, I'm not sure if uploads with no caption are supported. Maybe @dansup knows? :)

[trwnh]

Clicking "Create post" now simply closes the modal and refreshes the page, causing the image and any modifications to be lost.

[ellotheth]

Adding nullable to this might fix it, but I haven't gotten a dev instance running yet to test.

[trwnh]

This can be closed; captions are now optional. @dansup

edit: maybe only through the experimental UI? it's acting weird with the classic uploading UI...

[dansup]

@trwnh Yes, its only possible in the experimental UI. Will be replacing the old uploader soon enough!

[thomask-gh]

Indeed, omitting the caption works with the new experimental UI but makes the upload fail silently with the old uploader.