@Abhradwip Mukherjee​ ; The error you're seeing occurs because the schema you're specifying for your Delta Live table is not compatible with the schema of the data being read from the JSON files.

You should check that the schema you have specified matches the schema of the data you are trying to load. You can also try loading the data without specifying a schema, allowing Spark to infer the schema automatically

You can try to update the code to include an explicit schema definition when reading the JSON files so that it matches the schema you've specified for the Delta Live table.

Hope this helps you to debug!

Asides, the code you presented seems okay.