I'm using the newBulkLoad method of the Connection class of TediousJS.

After trying to execute this piece of code:

bulkLoad.addRow(TYPES.Null, col2, col3, col4, col5, TYPES.Null, col7, 
                                col8, col9, TYPES.Null, TYPES.Null, TYPES.Null);

I'm receiving the following error on that line:

No collation was set by the server for the current connection

I've previously setup the columns as specified in the URL above. What does this error mean? How can I solve it?