When I try to store an image into my AppEngine blobstore, I get the following error:
The API call blobstore.CreateUploadURL() required more quota than is available.
My app is a paid app. I checked my storage bucket where Google stores blobstore data and it is at 5GB -- the limit they set for free apps. I have tried to find the quota settings both in my app engine settings as well as in the general quota settings for my project, but I can't seem to find my blobstore quota anywhere.
I expect to be able to store more than 5GB of data, but it seems that I've hit some sort of limit. I don't want to migrate to Google Cloud Storage because that will take time.
You will need to enable billing on your project to uncap the 5GB limit.
If you have a daily budget for your application it could affect the quota, you could raise it to a non-zero value and see if that helps.