无法测试Facebook Messenger Bot：Webhook无事件接收且测试用户搜不到Bot

Hey there, let's walk through fixing the two main issues you're facing so you can get your bot tested before submission!

1. Fixing Webhook Not Receiving Messages from Testers/Developers #

Even though you completed the initial Webhook subscription, here are key checks to resolve the message reception problem:

• Verify Webhook Server Accessibility: Make sure your Webhook server is publicly reachable (localhost won't work—use tools like ngrok for local testing or deploy to a cloud service). Confirm it returns a 200 OK response for both the initial verification request and incoming event payloads.
• Check Subscribed Events: Double-check the Webhook settings to ensure you've selected all necessary Messenger events (e.g., messages, messaging_postbacks, messaging_optins). Missing events will mean you don't get alerts for those actions.
• Review Webhook Logs: Head to the "Logs" tab in the Webhook section of your developer console. Look for failed requests—error messages here (like timeouts, invalid signatures, or permission errors) will point you to the root cause.
• Re-validate Webhook: Sometimes re-subscribing the Webhook fixes glitches. Click the "Re-verify" button in your Webhook settings and ensure your server responds correctly.

2. Getting Test Users to Find & Interact with Your Bot #

Creating Test Users is only half the step—here's what you might have missed:

• Link Test Users to Your App: Go to the "Roles" section, select your Test Users, and under the "Test Apps" section, make sure your Messenger Bot app is checked. This grants the test user access to your in-development bot.
• Use the Test Conversation Link: Test users can't search for your bot in Messenger directly. Instead, generate a test link from the "Test" section of the Messenger tab in your developer console. Share this link with your Test Users—clicking it will open a direct conversation with your bot.
• Confirm App Status: Ensure your app is still in "Development Mode" (under App Review). Bots in development mode are only visible to assigned Test Users, which is exactly what you want pre-submission.

Quick Recap of Possible Missteps #

• You might not have associated your Test Users with your bot application
• You're trying to search for the bot instead of using the dedicated test link
• Your Webhook server might be unreachable or failing to handle events correctly

Give these steps a try, and you should be able to test your bot smoothly!

内容的提问来源于stack exchange，提问作者BlowMan