getTransactionReceipt error

await provider.waitForTransaction(transaction.hash);
const receipt = await provider.getTransactionReceipt(transaction.hash);

When I log receipt from getTransactionReceipt, I get this error:

Error: invalid transaction receipt - exactly one of status and root should be present

What am I doing wrong?

My provider is a parity node running on Kovan (I used providers.JsonRpcProvider)

[ricmoo]

If you use v4, interface.parseLog will figure out which event it is and parse it for you, including the name, function signature, topic and parsed values.

There is also an interface.parseTransaction that will look up what function and what values the transaction represents.

So, you can directly access contract.interface.parseLog if you have a contract, or you can just instantiate an Interface if you are processing the blockchain in general.

[naddison36]

@mrwillis this is how I parse events in the transactions receipt.

/**
 * Parses transaction events from the logs in a transaction receipt
 * @param {TransactionReceipt} receipt Transaction receipt containing the events in the logs
 * @returns {{[eventName: string]: TransactionEvent}} an object with each key-value pair being the event name and event object
 */
protected getTransactionEvents(receipt: TransactionReceipt): {[eventName: string]: TransactionEvent}
{
	const txEvents: {[eventName: string]: TransactionEvent}  = {}

	// do not get events if the contract has not been set yet. This will be true for deploy transactions which can emit events
	if (!this.contract) {
		return txEvents
	}

	// for each log in the transaction receipt
	for (const log of receipt.logs)
	{
		// for each event in the ABI
		for (const abiEvent of Object.values(this.contract.interface.events))
		{
			// if the hash of the ABI event equals the tx receipt log
			if (abiEvent.topics[0] == log.topics[0])
			{
				// Parse the event from the log topics and data
				txEvents[abiEvent.name] = abiEvent.parse(log.topics, log.data)

				// stop looping through the ABI events
				break
			}
		}
	}

	return txEvents
}