Error "contract check failed"

[lihui1625]

I add new word to dictionary.
-> Web extension of wallet pops.
-> I confirm the pay.
-> Then error pops.

[yupnano]

What's the error message?

[jiahao42]

Have you got any balance then? Maybe you should claim some Testnet NAS first.
link: https://testnet.nebulas.io/claim/