laravel + bootstrap, does not open relations master detail stays in load…
what version of Radsystems Studio? And also send a screenshot of your configuration for that master details.
The master details configuration screenshot you sent is not the screenshot of the error you are having. There are two types of master details configurations available in Radsystems Studio, the grouped and the single field. The single field configuration is the screenshot you sent, while the error you are having is on the grouped master details configuration, which is located close to the Authentication configuration button in Radsystems Studio.