I have setup a private ethereum network on an AWS ubuntu instance. The application has been deployed using truffle and uses metamask to approve transactions. There are two different pages one for admin another for user. Once the admin creates a user using a given address, the user should be able to look into its profile from the use console given metamask is also logged into the same user. However whenever the user page loads the information about the user balance is not reflected and on loading the page throws an error:Unable to get UserError: ERROR: The returned value is not a convertible string: Kindly help.