This is most probably due to Data tool service having some API issues on their end, because of which if you are using their service then you can get this error message. However, they would have fixed the issue and should now be operating normally. For more information on their downtime, please see Past Incidents in the following status page from Datatools: https://status.datatools.com.au/
It is advised to register for the updates on the above link so you can stay up to date with such issues.
If you do continue to get the same error, then please reach out to us and we can have a look further.