This issue happens on production of one user that enabled Sentry:

![Screenshot_20210303_002028](https://user-images.githubusercontent.com/18581488/109716945-7f9a1200-7bb6-11eb-8cf4-1080ad535d18.png)

Build id: 49938CCB63EE2A4E16CF0528307EE15F08469219.
{
    assert(helper);
    
    Poco::URI columns_info_uri = helper->getColumnsInfoURI();
    columns_info_uri.addQueryParameter("connection_string", connection_string);
    if (!schema_name.empty())
        columns_info_uri.addQueryParameter("schema", schema_name);
    columns_info_uri.addQueryParameter("table", remote_table_name);
    const auto use_nulls = context.getSettingsRef().external_table_functions_use_nulls;
    columns_info_uri.addQueryParameter("external_table_functions_use_nulls",
                                       Poco::NumberFormatter::format(use_nulls));
    ReadWriteBufferFromHTTP buf(columns_info_uri, Poco::Net::HTTPRequest::HTTP_POST, {}, ConnectionTimeouts::getHTTPTimeouts(context));
    std::string columns_info;
    readStringBinary(columns_info, buf);
    NamesAndTypesList columns = NamesAndTypesList::parse(columns_info);
    return ColumnsDescription{columns};
}
StoragePtr ITableFunctionXDBC::executeImpl(const ASTPtr & , const Context & context, const std::string & table_name, ColumnsDescription ) const