Can't refresh materialized view with ormlite

I have updated ServiceStack to latest version on a project and now this line seems to be giving me issues:

_db.ExecuteNonQuery("REFRESH MATERIALIZED VIEW product_book;");

It generates this error in logs:

2020-08-25 23:14:26.8896||DEBUG|OrmLiteResultsFilterExtensions|SQL: REFRESH MATERIALIZED VIEW product_book; |url: |action: 
2020-08-25 23:17:19.6129||ERROR|ImportBookHelper|Error reading xml Npgsql.PostgresException (0x80004005): 42P01: relation "product_book" does not exist
   at Npgsql.NpgsqlConnector.<>c__DisplayClass160_0.<<DoReadMessage>g__ReadMessageLong|0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at Npgsql.NpgsqlConnector.<>c__DisplayClass160_0.<<DoReadMessage>g__ReadMessageLong|0>d.MoveNext() in C:\projects\npgsql\src\Npgsql\NpgsqlConnector.cs:line 973
--- End of stack trace from previous location where exception was thrown ---
   at Npgsql.NpgsqlDataReader.NextResult(Boolean async, Boolean isConsuming) in C:\projects\npgsql\src\Npgsql\NpgsqlDataReader.cs:line 449
   at Npgsql.NpgsqlDataReader.NextResult() in C:\projects\npgsql\src\Npgsql\NpgsqlDataReader.cs:line 298
   at Npgsql.NpgsqlCommand.ExecuteReaderAsync(CommandBehavior behavior, Boolean async, CancellationToken cancellationToken) in C:\projects\npgsql\src\Npgsql\NpgsqlCommand.cs:line 1178
   at Npgsql.NpgsqlCommand.ExecuteNonQuery(Boolean async, CancellationToken cancellationToken) in C:\projects\npgsql\src\Npgsql\NpgsqlCommand.cs:line 977
   at Npgsql.NpgsqlCommand.ExecuteNonQuery() in C:\projects\npgsql\src\Npgsql\NpgsqlCommand.cs:line 959
   at ServiceStack.OrmLite.OrmLiteResultsFilterExtensions.ExecNonQuery(IDbCommand dbCmd, String sql, Object anonType) in C:\BuildAgent\work\27e4cc16641be8c0\src\ServiceStack.OrmLite\OrmLiteResultsFilterExtensions.cs:line 32
   at ServiceStack.OrmLite.OrmLiteExecFilter.Exec[T](IDbConnection dbConn, Func`2 filter) in C:\BuildAgent\work\27e4cc16641be8c0\src\ServiceStack.OrmLite\OrmLiteExecFilter.cs:line 64
  Exception data:
    Severity: ERROR
    SqlState: 42P01
    MessageText: relation "product_book" does not exist
    File: namespace.c
    Line: 407
    Routine: RangeVarGetRelidExtended|url: |action: 

I have tried running REFRESH MATERIALIZED VIEW product_book; in the postgresql console and it runs fine. I have also tried using ExecuteSql() but always the same issue.

It says relation doesn't exist but it does. Also the connection string is definitely to the right database and it can read/write fine.

This used to work but now it seems to have stopped working and I can't figure out why.

This isn't going to be an issue with OrmLite which just sends the SQL as-is to Npgsql ADO.NET provider which is returning the server PostgreSQL error.

For some reason the connection string doesn't have visibility or access to your product_book materialized view, some potential issues could be the user may not have access to it, or it's in a different schema.