To receive notifications in your Google Chat for any File Upload Form follow these steps.
Step 1
Create a new Chat Space
Click on the Space and click the down arrow where we select: Apps & Integrations 
Step 2
Here we select the Webhooks and click “Add webooks” button.

Give your new webhook a name

Click save and then copy link.

Step 3
In the Notifications page enter the name, select channel as Google Chat.
Select the form or all forms.
Paste the webhook URL generated earlier and click Add Destination

Now the notification is live. You can edit, and disable and enable again at any time.
