The internal Salesforce error that results in a GACK notification. The corresponding Error ID's can be used by Salesforce to diagnose the issue.
See Salesforce Developers Blog - What Is A Gack?
There are two components in a GACK Error ID:
E.g. 1930371979-47278 (1185375568)
- The first part containing the hyphen is the identifier for the specific event.
- The number in the parentheses identifies the general stack track that produced that failure.