Error message while pre-processing

While processing S3B/OLCI data for Rayleigh correction an error comes which is shown in the attached image.

Error message is following:
A problem occurred during the target product processing
Type: Operator exception
Message null

How to proceed for Rayleigh correction. And I want to make time series of 60 images of Rayleigh correction. How to do the batch processing using Graph builder?

You are using an outdated version of SNAP. Please install the latest version and install all updates using the plugin manager.