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Archived discussions · Captured October 28, 2026

Bokeh server not working after Tornado upgrade to v4.5?

Community Support
Marcus_Donnelly
Marcus_Donnelly

Hi,

Just tried running a Bokeh server app after reinstalling Bokeh in a new virtualenv. It didn’t work - the browser just shows an empty window and can’t connect to the server. I uninstalled tornado v4.5 (latest version as of 1 day ago) and re-installed v4.4.3 and the app worked fine. Has something about tornado v4.5 broken the Bokeh server?

Thanks,
Marcus.

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Bryan
Bryan

It appear so

https://github.com/bokeh/bokeh/issues/6151

This is dupe but I can’t mark it on my phone. Ping @canavandl

···

On Apr 17, 2017, at 17:10, Marcus Donnelly marcus.k.donnelly@gmail.com wrote:

Hi,

Just tried running a Bokeh server app after reinstalling Bokeh in a new virtualenv. It didn’t work - the browser just shows an empty window and can’t connect to the server. I uninstalled tornado v4.5 (latest version as of 1 day ago) and re-installed v4.4.3 and the app worked fine. Has something about tornado v4.5 broken the Bokeh server?

Thanks,
Marcus.

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Bryan
Bryan

Thought this was a github email…

···

On Apr 17, 2017, at 17:48, Bryan Van de Ven bryan@bokeh.org wrote:

It appear so

https://github.com/bokeh/bokeh/issues/6151

This is dupe but I can’t mark it on my phone. Ping @canavandl

On Apr 17, 2017, at 17:10, Marcus Donnelly marcus.k.donnelly@gmail.com wrote:

Hi,

Just tried running a Bokeh server app after reinstalling Bokeh in a new virtualenv. It didn’t work - the browser just shows an empty window and can’t connect to the server. I uninstalled tornado v4.5 (latest version as of 1 day ago) and re-installed v4.4.3 and the app worked fine. Has something about tornado v4.5 broken the Bokeh server?

Thanks,
Marcus.

–

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Marcus_Donnelly
Marcus_Donnelly

No, just forum post. Thanks for update, glad it’s in hand. Cheers, Marcus.

···

On 17 Apr 2017 22:48, “Bryan Van de Ven” bryan@bokeh.org wrote:

Thought this was a github email…

On Apr 17, 2017, at 17:48, Bryan Van de Ven bryan@bokeh.org wrote:

It appear so

https://github.com/bokeh/bokeh/issues/6151

This is dupe but I can’t mark it on my phone. Ping @canavandl

On Apr 17, 2017, at 17:10, Marcus Donnelly marcus.k.donnelly@gmail.com wrote:

Hi,

Just tried running a Bokeh server app after reinstalling Bokeh in a new virtualenv. It didn’t work - the browser just shows an empty window and can’t connect to the server. I uninstalled tornado v4.5 (latest version as of 1 day ago) and re-installed v4.4.3 and the app worked fine. Has something about tornado v4.5 broken the Bokeh server?

Thanks,
Marcus.

–

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Luke_Canavan
Luke_Canavan

A dev release containing a bugfix was just made. You can install it via conda install -c bokeh/label/dev bokeh=0.12.6dev2.

Thanks again for the report.

···

On Monday, April 17, 2017 at 7:04:52 PM UTC-3, Marcus Donnelly wrote:

No, just forum post. Thanks for update, glad it’s in hand. Cheers, Marcus.

On 17 Apr 2017 22:48, “Bryan Van de Ven” bry...@continuum.io wrote:

Thought this was a github email…

On Apr 17, 2017, at 17:48, Bryan Van de Ven bry...@continuum.io wrote:

It appear so

https://github.com/bokeh/bokeh/issues/6151

This is dupe but I can’t mark it on my phone. Ping @canavandl

On Apr 17, 2017, at 17:10, Marcus Donnelly marcus.k...@gmail.com wrote:

Hi,

Just tried running a Bokeh server app after reinstalling Bokeh in a new virtualenv. It didn’t work - the browser just shows an empty window and can’t connect to the server. I uninstalled tornado v4.5 (latest version as of 1 day ago) and re-installed v4.4.3 and the app worked fine. Has something about tornado v4.5 broken the Bokeh server?

Thanks,
Marcus.

–

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Marcus_Donnelly
Marcus_Donnelly

Thanks Luke. I’m using the workaround at the moment but will try the dev build at some point.

···

On 19 Apr 2017 00:23, “Luke Canavan” canavandl@gmail.com wrote:

A dev release containing a bugfix was just made. You can install it via conda install -c bokeh/label/dev bokeh=0.12.6dev2.

Thanks again for the report.

On Monday, April 17, 2017 at 7:04:52 PM UTC-3, Marcus Donnelly wrote:

No, just forum post. Thanks for update, glad it’s in hand. Cheers, Marcus.

On 17 Apr 2017 22:48, “Bryan Van de Ven” bry...@continuum.io wrote:

Thought this was a github email…

On Apr 17, 2017, at 17:48, Bryan Van de Ven bry...@continuum.io wrote:

It appear so

https://github.com/bokeh/bokeh/issues/6151

This is dupe but I can’t mark it on my phone. Ping @canavandl

On Apr 17, 2017, at 17:10, Marcus Donnelly marcus.k...@gmail.com wrote:

Hi,

Just tried running a Bokeh server app after reinstalling Bokeh in a new virtualenv. It didn’t work - the browser just shows an empty window and can’t connect to the server. I uninstalled tornado v4.5 (latest version as of 1 day ago) and re-installed v4.4.3 and the app worked fine. Has something about tornado v4.5 broken the Bokeh server?

Thanks,
Marcus.

–

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