Can't delete AWX Inventory

Just installed new AWX (AWX 9.3.0, Ansible 2.9.5) and use it from Chrome. Can’t delete Inventory. The radio button seems can’t be selected but when click it, the deletion seems executing on that inventory. It shows ‘working…’ for a while and errors out with message: Call to /api/v2/inventories/4/ failed. DELETE returned status: 504

I saw similar post before with AWX 2.6.0 and the reply suggested to use newer version of AWX. But it seems not fixed. Any idea?

Thanks,

JZ

I am getting the same problem, can’t delete Inventory, Projects, however can create them.

Looking at the awx_task logs, I see the error:
OSError: failed to resolve broker hostname
socket.gaierror: [Errno -2] Name or service not known