Einstein Bot fails to launch in Messaging for In-App and Web (MIAW)

Follow these steps to toggle the Einstein Bot off and on:

1. Go to Setup > Einstein Bots.
2. Change the Einstein Bots toggle in the upper right to Off.
* At this point, confirm that the list of bots displayed at the bottom of the screen is hidden.
3. Please wait for about 5 minutes.
4. Change the [Einstein Bots] toggle back to On. 
* Confirm that the list of bots reappears.
5. Check if the Einstein Bot launches.

Follow these steps to check the Omni-Channel Flow configured for the Einstein Bot:

1. Go to Setup > Einstein Bots.
2. Click the bot you want to use.
3. Click the Dialogs tab in the upper left, then switch to the Overview tab.
4. Click the Omni-Channel Flow set in Inbound Omni-Channel Flows.
5. In the "Route Work" action, check if the following are configured:
・Route To: Enhanced Bot
・Enhanced Bot: The bot you want to use
6. Confirm that the flow is Activate.
7. Check if the Einstein Bot launches.

Follow these steps to check the Omni-Channel Flow configured for the Messaging Channel:

1. Go to Setup > Messaging Settings.
2. For the Messaging Channel you want to use, click its Channel Name.
3. Check Omni-Channel Routing and confirm that the Flow Definition is set to the same flow that is configured in the Einstein Bot's Inbound Omni-Channel Flows.
4. Check if the Einstein Bot launches.