[Bug] no error in the log and no dashboard process

[yiwei00000]

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Ray Component

Dashboard

What happened + What you expected to happen

When I use ray version 1.8.0, I use the command ray start --head --port = 6379 --dashboard host = 0.0.0. After starting, there is no error in the log, but there is no dashboard process, and I can't access ray dashboard in the browser

Versions / Dependencies

ray 1.8.0

Reproduction script

ray start --head --port=6379 --dashboard-host=0.0.0.0

Anything else

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

[rkooo567]

cc @edoakes @simon-mo

[simon-mo]

Can you add --include-dashboard=true?

[jfischer]

Hi, I ran into the same issue. I'm starting ray 1.8.0 with the following command line:

ray start --head --dashboard-host=0.0.0.0 --include-dashboard=true --block

I added a print to my local copy of Ray to get the exact cause of the import error. This is the error: No module named 'aiohttp.signals'

In my environment, I'm using version 3.8.0 of aiohttp. It does not have a signals submodule. Looking at the commit history for aiohttp, I suspect the following change is causing the problem: aio-libs/aiohttp@7f0cd0d#diff-2f6aee0ecbf53b6b3760ba0a15c5cbc47898bdcdab1db521a63ad99a7bca3d98

[simon-mo]

yes. please downgrade aiohttp to <3.8 for now. #19940 (comment) We currently pinned the version in development branch and will make Ray compatible with 3.8.0 soon #19951