Abhishek Pakhare

> Did you used collapsible in side menu? if yes then you can check that collapsible must have the collapsible body to open, if it doesn't find any collapsible body...

[https://github.com/Dogfalo/materialize/issues/6139#issuecomment-425710936](Solution) @wrappixel the solution you have given for issue #6139 for adding a collapsible body div worked for me.