Trying another fix.

Author: Antiarchitect

lib/puppet/provider/s3_bucket/v2.rb

@@ -33,7 +33,7 @@ def self.instances
 
       begin
         results = s3_client.get_bucket_encryption({bucket: s3_bucket.name})
-        data[:encryption_configuration] = JSON.pretty_generate(camelize_stringify_keys(results.server_side_encryption_configuration.to_h))
+        data[:encryption_configuration] = JSON.pretty_generate(camelize_stringify_keys({ 'ServerSideEncryptionConfiguration' => results.server_side_encryption_configuration.to_h }))
       rescue Exception => e
         Puppet.debug("An error occurred reading the encryption configuration on S3 bucket #{s3_bucket.name}: " + e.message)
       end
@@ -84,7 +84,7 @@ def lifecycle_configuration=(value)
   end
 
   def encryption_configuration=(value)
-    Puppet.debug('Replacing bucket lifecycle configuration')
+    Puppet.debug('Replacing bucket encryption configuration')
     s3_client.put_bucket_encryption({
       bucket: @property_hash[:name],
       server_side_encryption_configuration: underscore_symbolarize_keys(JSON.parse(value))