data: { ok: false, error: "name 'tonlib' is not defined", code: 503 }

[TNBT12g]

Hi everyone, I am learning Ton network.
At lesson in step 9, when I run "npx blueprint run" and choose some setting. I get the error above.
npx blueprint run
? Choose file to use (Use arrow keys)
? Choose file to use deployCounter
? Which network do you want to use?
? Which network do you want to use? testnet
? Which wallet are you using?
? Which wallet are you using? Mnemonic
Connected to wallet at address: EQBnIpbKyrXPNDFzYBmTXkJnNxyNVt0hohC3IWyFboJ9ZLmE
contract address: EQB8vphkOaJ7zVODEJ2WUCVh2gJMOjvr3hxJELH1Ubl3LMKD

if you have the same issue and know how to fix that, please help me. Thank you all.