Seaquel
SQL Server error code

SQL Server error 8978

SQL Server raises error 8978 at severity 16, which marks a problem with the query or data that you can correct.

Table error: Object ID %d, index ID %d, partition ID %I64d, alloc unit ID %I64d (type %.*ls). Page %S_PGID is missing a reference from previous page %S_PGID. Possible chain linkage problem.
Msg8978
Severity16
Group8000–8999

Source: Database Engine events and errors