Common errors
Table of the most frequent errors in Pulbot and how to resolve them.
Reference
- Flow doesn't activate with real messages
- 1) Is it in production? 2) Is the channel webhook configured in Meta/BotFather? 3) Is the balance > $0?
- WhatsApp token expired
- The 24h token expired. Generate a new one or switch to a long-lived system token.
- Telegram bot doesn't respond in groups
- Enable /setprivacy → Disable in @BotFather.
- Node fails with 401
- Connector credentials incorrect or expired. Update the connector.
- Node fails with timeout
- External service didn't respond. Increase timeout or check availability.
- AI agent repeats response
- Disconnect the Window Buffer. Use KV Store for session state.
- {{variable}} not replaced
- The variable doesn't exist at that point in the flow. Check name and node order.
- Sim in «Waiting» forever
- The phone number is wired to the wrong environment's webhook (dev vs prod).
- 403 on MCP
- WAF blocked the User-Agent. Set a custom User-Agent.
- Zero balance / flows paused
- Top up balance in Usage → Top up.
Next step
Learn to debug flows with the execution history.