[Bug][DataObject] Table attribute with fixed columns can result in error

[fashxp]

Expected behavior

No error with fixed columns

Actual behavior

Steps to reproduce

• Create class definition with table attribute with following column configuration
• add graphql endpoint that loads that class with the table attribute
• load data

[fashxp]

workaround: don't assign 0 and 1 as keys in the column configuration

[robertSt7]

Option1: add prefix for every key

Option2: add prefix for keys which starts with a number