Seaquel
SQL Server error code

SQL Server error 8020

SQL Server raises error 8020 at severity 16, which marks a problem with the query or data that you can correct.

The incoming tabular data stream (TDS) remote procedure call (RPC) protocol stream is incorrect. Parameter %d ("%.*ls"): Data type "0x%02X" (CLR type) has an invalid length for serialization metadata.
Msg8020
Severity16
Group8000–8999

Source: Database Engine events and errors