Error adding asset in wallet

Welcome to Algorand!

Opting in to assets in Algorand require your account has some minimum amount of Algos (specifically 0.1 Algos base + 0.1 Algo per asset).
To add your first asset, you need at least 0.2 Algos in your account.

See
Asset Limit Account and Minimum Balance - #2 by fabrice to understand the logic.