Cannot find module 'crypto' [line 1]

Hello n8n community friends,

I’m currently using one of the templates created by Flavio Angeleu titled “Create Secure Interactive Applications with WhatsApp Flows End-to-End Encryption.”

However, I’m stuck at Step 3 – Decryption Code and unable to proceed. Could anyone kindly guide me through this part?

If you have simple method, please share with me. Thanks in advance for your help!

okay, let me take a look