The error message indicates an issue with the Spark driver in your Databricks environment. This can be caused by various factors such as:

1. Check Cluster Configuration: Ensure that your Databricks cluster has sufficient resources (CPU, memory) to handle the workload. You may need to increase the number of worker nodes or the size of the driver node.

2. Review Spark Logs: Check the Spark driver and executor logs for any error messages or stack traces that can provide more information about the cause of the issue. You can access the logs from the Databricks UI.

3. Optimize Code: Review your code for any potential inefficiencies or resource-intensive operations. Consider optimizing your code to reduce memory and CPU usage.

4. Increase Driver Memory: If the driver is running out of memory, you can increase the driver memory in the cluster configuration.