Send Dunning Letters- Error

Summary:

The Standard Send Dunning letters Process is ending in error, with no error details.

Content (required):

The Standard Send Dunning letters Process is ending in error. cannot see any error in parent or child process. The Validate Customer Validate Customer Dunning Setup Report is not showing any error details at customer level or contact level. All the setups are in place, even at the Config level & also at customer level (Dunning site, contact with email, profile send dunning enabled). Attaching log file for more details.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):