![javascript - Drop down in boot strap isn't working - Showing popper.js required in console - Stack Overflow javascript - Drop down in boot strap isn't working - Showing popper.js required in console - Stack Overflow](https://i.stack.imgur.com/gAgBf.png)
javascript - Drop down in boot strap isn't working - Showing popper.js required in console - Stack Overflow
![with buildOptimizer: true -> Uncaught ReferenceError: Animation is not defined in kendo-drawing · Issue #1542 · telerik/kendo-angular · GitHub with buildOptimizer: true -> Uncaught ReferenceError: Animation is not defined in kendo-drawing · Issue #1542 · telerik/kendo-angular · GitHub](https://user-images.githubusercontent.com/247917/40641291-cd7c2dec-6321-11e8-9a71-67fab3377d1d.png)
with buildOptimizer: true -> Uncaught ReferenceError: Animation is not defined in kendo-drawing · Issue #1542 · telerik/kendo-angular · GitHub
Error: You gave us a visitor for the node type StaticBlock but it's not a valid type · Issue #12893 · storybookjs/storybook · GitHub
warning " > bootstrap@4.4.1" has unmet peer dependency "popper.js@^1.16.0". · Issue #30760 · twbs/bootstrap · GitHub
![Question] Should we provide a bundled release of Bootstrap with Popper.js · Issue #22783 · twbs/bootstrap · GitHub Question] Should we provide a bundled release of Bootstrap with Popper.js · Issue #22783 · twbs/bootstrap · GitHub](https://user-images.githubusercontent.com/1689750/27172372-4afd176a-51b5-11e7-8037-7c6c70f057a5.png)