I posted this on the [plotly community forum](https://community.plotly.com/t/plots-from-colab-dont-show-in-nbviewer/93179) but so far got no traction so I'm reporting this here. - **What I did:** - Created this [Colab notebook](https://colab.research.google.com/github/mklilley/test/blob/main/Plotly-colab-nbviewer.ipynb) with a simple plotly line chart - Added `pio.renderers.default = "notebook_connected+colab"` as per [Plotly’s instructions](https://plotly.com/python/renderers/) for using Multiple Renderers - Pushed it to [this public Github repo](https://github.com/mklilley/test/blob/main/Plotly-colab-nbviewer.ipynb) - Loaded the [notebook in Nbviewer](https://nbviewer.org/github/mklilley/test/blob/main/Plotly-colab-nbviewer.ipynb) - **What I expected:** - When loading in Nbviewer, I expected to see the rendered plotly graph as I did in Colab - **What I saw:** - No rendered plot in Nbviewer - `Plotly-colab-nbviewer.ipynb:14916 Uncaught ReferenceError: Plotly is not defined at Plotly-colab-nbviewer.ipynb:14916:462` in the Brave dev tools - **What seems strange:** - When I look at the HTML inside Nbviewer, I do see a script tag that should pull in Plotly and it’s right next to the script that makes the plot. ```php <script charset="utf-8" src="https://cdn.plot.ly/plotly-2.35.2.min.js"></script> <div id="5a0806d5-3da7-4c16-af56-b5fd7c6a67cb" class="plotly-graph-div" style="height:525px; width:100%;"></div> <script type="text/javascript"> window.PLOTLYENV=window.PLOTLYENV || {}; if (document.getElementById("5a0806d5-3da7-4c16-af56-b5fd7c6a67cb")) { Plotly.newPlot("5a0806d5-3da7-4c16-af56-b5fd7c6a67cb", [{"mode":"lines","name":"Simple Line","x":["2023-01-01T00:00:00","2023-01-02T00:00:00","2023-01-03T00:00:00","2023-01-04T00:00:00","2023-01-05T00:00:00","2023-01-06T00:00:00","2023-01-07T00:00:00","2023-01-08T00:00:00","2023-01-09T00:00:00","2023-01-10T00:00:00"],"y":[1,2,3,4,5,6,5,4,3,2],"type":"scatter"}], ... ``` I’ve seen a few posts that seem somewhat similar, but I thought I’d add some more details to the bug. Any thoughts?