Hi Steve,

Are you using the jsapi loader?  The only change recently is that the jsapi
loader is being redirected to the new loader.  I bet you are also missing a
call to google.setOnLoadCallback, and you have been lucky so far that the
jsapi loader was able to load the visualization library quickly, but with
the redirect, it takes a bit longer.

See the instructions for how to update your code to use the new loader
directly:

https://developers.google.com/chart/interactive/docs/basic_load_libs#update-library-loader-code

On Wed, Jun 17, 2020 at 11:05 AM Steve Wood <[email protected]> wrote:

> Suddenly:
>
> google.visualization.arrayToDataTable(my_data);
>
> returns "Cannot read property 'arrayToDataTable' of undefined"
>
> This problem is consistent across all browsers and incognito mode in
> Chrome.
>
> What can cause this? Is there a version change I need to address?
>
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-- 
Daniel LaLiberte <https://plus.google.com/100631381223468223275?prsrc=2>
[email protected] <[email protected]>   Cambridge MA

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