"InternalError" when executing create-store-image-task

Hi, in the Spain region I have EC2 and S3 services. When from CLI I execute the create-store-image-task instruction to copy the AMI in a S3 bucket (both in the same region) it returns the following: "An error occurred (InternalError) when calling the CreateStoreImageTask operation (reached max retries: 2): An internal error has occurred"

The executed instruction is the following: aws ec2 create-store-image-task --image-id ami-xxxxxxxx --bucket xxxxx --profile xxxx

The AMI is also generated from CLI and does not give any problem.

Best regards.