[Bug] Catch error for when input is big number notation.

[tamarandom]

[6:02 PM]Tamarandom: What was the last thing you did?
[6:02 PM]Tamarandom: Thanks for finding whatever bug this is!
[6:03 PM]rex: I tried to write the amount to send to someone in big number notation
[6:03 PM]rex: 1e6 as in 100k
[6:06 PM]Tamarandom: Ah, in the amount field directly or uploaded csv?
Would be better to have a more graceful error thrown for sure. Sorry.
[6:08 PM]rex: in the amount field directly
[6:08 PM]rex: i wrote 1e and it gave that error 😄