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Archived discussions · Captured October 28, 2026

Best way to deal with "a client-only or invalid attribute that shouldn't have been sent"?

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Paul
Paul

I’m getting the following warning when running Bokeh Application Server (0.11.1). Not sure what the message implies, and why the attributes are not expected. I’m unable to post the code from the office, so hope the description of the warning is sufficient…

The code is very similar to the movies app: http://demo.bokehplots.com/apps/movies

WARNING:bokeh.core.properties:JSON had attr ‘end’ on obj <bokeh.models.ranges.FactorRange object at …>, which is a client-only or invalid attribute that shouldn’t have been sent

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Mateusz_Paprocki
Mateusz_Paprocki

Hi,

···

On Mon, Apr 25, 2016 at 3:55 PM, rootsumsquared@gmail.com wrote:

I’m getting the following warning when running Bokeh Application Server (0.11.1). Not sure what the message implies, and why the attributes are not expected. I’m unable to post the code from the office, so hope the description of the warning is sufficient…

The code is very similar to the movies app: http://demo.bokehplots.com/apps/movies

WARNING:bokeh.core.properties:JSON had attr ‘end’ on obj <bokeh.models.ranges.FactorRange object at …>, which is a client-only or invalid attribute that shouldn’t have been sent

you can disregard this warning. It indicates that some model’s (FactorRange’s in this case) internal properties were transferred from web browser to the server and server is obligated to ignore such. It’s a bug, but a harmless one. This is fixed in 0.12dev8.

Mateusz

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