Hey @Shubham Bajaj, I actually started working on building the custom tool. I'm facing this error message when I'm building a custom voicemail detection and message tool in VAPI. I'm sharing the error screenshot here: Here is the JSON Code:{ "model": { "provider": "openai", "model": "gpt-4o", "messages": [ { "type": "system", "content": "You are a sales representative for CDS. If at any point you determine you're speaking to a voicemail system (greeting mentions 'unavailable', 'leave a message', 'voicemail', etc.), immediately use the leave_voicemail tool." } ], "tools": [ { "type": "voicemail", "function": { "name": "leave_voicemail", "description": "Leave a voicemail message when you detect you've reached a voicemail system" }, "messages": [ { "type": "request-start", "content": "Hi {{name}}, this is Linda at CDS. We work with IT firms and MSPs on secure backup, recovery, and cybersecurity. You can reach me at 531-223-1129. Again, this is Linda with Central Data Storage, at 531-223-1129. Looking forward to connecting." } ] } ] } } Please, please help me resolve this issue ASAP. I'm currently using this webpage as a resource to build this voicemail tool out: https://docs.vapi.ai/tools/voicemail-tool Please let me know if I'm making any mistake or this is an issue from VAPI's side @Ron, @millionaire, @Hashrod, @Jason, @Ocha, @Fabiansky Trafada Perkasa, @Painter-CNH, @Space Cowboy, @Amir76 https://cdn.discordapp.com/attachments/1228667357849849856/1415391351805182033/image.png?ex=68c5ac6a&is=68c45aea&hm=82b240efae9411df528fe00667e61c3e5a72e63fe269d5953b1a205631ee45a9&