Clover Printer NPE

print.kt

import android.os.IInterface
import com.clover.sdk.v1.ServiceConnector
import android.accounts.Account
import android.app.Activity
import android.content.Context
import com.clover.sdk.util.CloverAccount
import com.clover.sdk.v1.Intents
import com.clover.sdk.v1.ResultStatus
import com.clover.sdk.v1.ServiceConnector
import com.clover.sdk.v1.printer.Category
import com.clover.sdk.v1.printer.PrinterConnector
import com.clover.sdk.v1.printer.ReceiptRegistrationConnector
import com.clover.sdk.v1.printer.job.StaticBillPrintJob
import com.clover.sdk.v3.order.OrderConnector

// This is a wrapper around the ServiceConnector that executes `body` in the
// context of a connected service and always ensures that the service is
// disconnected, even if `body` throws.
fun <T : ServiceConnector<Service>, Service: IInterface, Result> connectedTo(connector: T, body: (T) -> Result) : Result {
    connector.connect()
    try {
        return body.invoke(connector)
    } finally {
        connector.disconnect()
    }
}

fun printOrder(context: Context, account: Account, orderId: String) {
    connectedTo(PrinterConnector(context, account, null)) { printerConnector ->
        val printer = printerConnector.getPrinters(Category.RECEIPT).firstOrNull()
        if (printer != null) {
            connectedTo(OrderConnector(context, account, null)) {
                val o = it.getOrder(orderId)
                StaticBillPrintJob.Builder().order(o).build().print(context, account, printer)
            }
        }
    }
}