JSON serializable with gensim's TFIDF matrix

[husseinkohy]

Hi,
I have a gnsim LDA model based on a TFIDF matrix. When I call "pyLDAvis.display" I get the following error.

"TypeError: 0j is not JSON serializable"

this error is not raised when I prepare the data:
pyLDAvis.gensim.prepare
or
pyLDAvis.utils.html_id_ok(pyLDAvis.utils.get_id(pyLDAvis.gensim.prepare))

similar issue is raised but a solution is not provided (bmabey/pyLDAvis#69). also, when I do not use a tfidf matrix I am able to display the results as expected.

thank you