Perform Object Sharing Rule Assignment Processing Error

Summary:

Perform Object Sharing Rule Assignment Processing Error on Sales Leads.

Content (please ensure you mask any confidential information):

The Object sharing rules we have configured for leads has been erroring on our Test and Prod environments since we received the 26A upgrade. No configuration changes were made to Roles or the Sharing settings before the upgrade. Attached is the error log from the Perform Object Sharing Rule Assignment Processing scheduled process.

We are sharing leads with specific Roles and have one custom rule set up to give specific roles access to the Lead if the Customer ID is blank.