Bokeh embedding problem --- JSON object has wrong type string

JSON object has wrong type string when trying to embed bokeh-generated HTML in a web page. This used to work last year, but I recently updated and now no more. I run a Python script to output Bokeh HTML and the include it.

@reckoner it’s not possible to comment without (alot) more context. Specifically a minimal complete script to reproduce, as well as specifiic versions involved.