Fix: Loading YAML Metadata failed with type error

The issue was caused by raw_data not being initialized as the proper type due to missing parenthesis in the constructor call
1 job for 110-enable-datacontainer-to-compose-a-dataframe-from-given-ids in 2 minutes and 25 seconds (queued for 1 second)
Status Name Job ID Coverage
  Build
passed build:package #297078

00:02:25