I cant upload to an elastic beanstalk environment

Please refer to this troubleshooting guideline for debugging the issue: Link to AWS Knowledge Center - Elastic Beanstalk Invalid State. Please let me know if following these steps resolves the problem. If not, please inform me so we can explore further solutions.

Thanks for the info - i could see in CLoudFormation that the EBS instance create had failed - even though it was GREEN in the EBS environments view.

In the end all i could do to fix it was to terminate the EC2 & EBS instances and recreate them!