Updated to latest version and found below error. Seems no impl of show_with_default_app for wasm.
[dependencies]
plotly = {version="0.8.2", features=["wasm"]}
177 | pub struct Plot {
| --------------- function or associated item `show_with_default_app` not found for this struct
...
270 | Plot::show_with_default_app(temp_path);
| ^^^^^^^^^^^^^^^^^^^^^ function or associated item not found in `Plot`