gistfile1.txt

{ sql: 'insert into users (user_name) values (?)' }


buffer.js:572
        return this.utf8Write(string, offset, length);
                    ^

TypeError: Argument must be a string
    at TypeError (native)
    at Buffer.write (buffer.js:572:21)
    at XdrWriter.addString (d:\knex\node_modules\node-firebird\lib\serialize.js:
274:17)
    at Connection.prepareStatement (d:\knex\node_modules\node-firebird\lib\index
.js:3558:9)
    at d:\knex\node_modules\node-firebird\lib\index.js:1315:17
    at doCallback (d:\knex\node_modules\node-firebird\lib\index.js:1237:5)
    at Socket.<anonymous> (d:\knex\node_modules\node-firebird\lib\index.js:2932:
17)
    at emitOne (events.js:77:13)
    at Socket.emit (events.js:169:7)
    at readableAddChunk (_stream_readable.js:146:16)
    at Socket.Readable.push (_stream_readable.js:110:10)
    at TCP.onread (net.js:523:20)