- No, now you cannot add new regions, but you can ask the maintainer of the Amazon's SDK for PHP plugin to update their plugin to use the latest sdk version (see https://github.com/catalyst/moodle-local_aws/pull/11). This plugin adds support for regions like eu-north-1 and ap-south-1, so these regions also become available in the s3_bucket plugin.
- To handle code 500 errors, there is more information needed: error 500 is a generic error message, indicating that an unexpected condition was encountered and no more specific message is available. What are your error logs revealing? Which OS - php - Apache is used? Perhaps it is a good idea to create a new issue in the bug tracker (https://github.com/ewallah/moodle-repository_s3bucket/issues)
General developer forum
Couple of question on Amazon S3 endpoint?
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