add queue is working on local, but when I deploy from heroku server not working

[canibal1]

When I click the add queue button, nothing happens and I see the following on the console screen.

can you help me?

note: I was created .env file and I wrote here YOUTUBE_API_KEY

[canibal1]

I see this when I open error messages.

[sadiesocio]

I am also experiencing this issue on heroku. Any ideas?

Edit:
Go to Settings
Enter the YouTube API key under Config Vars

[canibal1]

Thank youu so much :)
I was try change manually youtube v3 api key from server.js file 😆