Improve error messages and error handling

[ryanchristo]

It was reported that the following error occurred when the user did not have enough tokens to execute the transaction.

Ideally the error message here would be more specific rather than return "no transaction data found". We should also make sure error messages throughout the application are being properly handled and the message is clear.

[Vayras]

Hi @ryanchristo I would like to work on this issue , can you tell me how to replicate the issue and assign me to this