Fix signature request rejection error on Create button click

[foxytanuki]

Description

When clicking the Create button on the /start page, a modal appears with the message "⚠️ User rejected the signature request." Additionally, the browser console shows an error: "inpage.js:1 MetaMask - RPC Error: Invalid input."

Steps to Reproduce

1. Navigate to the /start page
2. Click the Create button
3. Observe the modal and console error

Expected Behavior

The signature request should be processed correctly without any errors.

Actual Behavior

• A modal appears with the message "⚠️ User rejected the signature request."
• The console shows an error: "inpage.js:1 MetaMask - RPC Error: Invalid input."

Environment

• Browser: arc
• MetaMask version: flask