Internal error encountered message appear when creating Sink

[VARONTO]

Hello,

I got error message "Internal error encountered." when I clicked "Create sink" button.
I have already created Pub/Sub topic and subscription so I have selected Pub/Sub topic as sink destination.
Could anyone advise me to resolve this issue? Thank you so much for your attention.

[nceniza]

It seems to be working fine in my project: 

I would suggest to file a support case here for this matter, as the Google engineers has a better visibility of your logs and resource usage.