Can't connect GitHub account

I can’t connect my GitHub account to the DI app creation step 1 here:

After I select the repo to connect to, Github redirects me back to DO: But then I get:

id: "Internal Server Error",
message: "Server Error"

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Fixed by help from Support:

The error you are seeing typically indicates that you are trying to
 authorize a Github organization account, but have not yet authorized 
your personal Github account. The best way to correct this would be to 
delete the DigitalOcean app from the app's section of your Github 
account. Please then sign out of your Github account. Once done go 
through the Github authorization again in your DigitalOcean app's 
create flow. Please first authorize your personal Github account 
followed by your organization. The personal account is what provides 
the correct permissions the org has given your Github user. You must 
also have owner or maintainer privileges on the repo you are trying to 
deploy from.