not displaying anything

[roberto68]

probably smth from imports changed and I got this
[](warning.js?85a7:45 Warning: React.createElement: type should not be null, undefined, boolean, or number. It should be a string (for DOM elements) or a ReactClass (for composite components).warning @ warning.js?85a7:45ReactElementValidator.createElement @ ReactElementValidator.js?d60b:221(anonymous function) @ main.js?7a2b:21(anonymous function) @ bundle.js:700__webpack_require__ @ bundle.js:535fn @ bundle.js:76(anonymous function) @ entry.js?49c3:1(anonymous function) @ bundle.js:622__webpack_require__ @ bundle.js:535fn @ bundle.js:76(anonymous function) @ bundle.js:567__webpack_require__ @ bundle.js:535(anonymous function) @ bundle.js:558(anonymous function) @ bundle.js:561 invariant.js?bb9b:39 Uncaught Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined.invariant @ invariant.js?bb9b:39instantiateReactComponent @ instantiateReactComponent.js?a004:64ReactCompositeComponentMixin.mountComponent @ ReactCompositeComponent.js?47a9:223ReactCompositeComponent_mountComponent @ ReactPerf.js?6da6:66ReactReconciler.mountComponent @ ReactReconciler.js?9da7:37ReactMultiChild.Mixin.mountChildren @ ReactMultiChild.js?87d2:241ReactDOMComponent.Mixin._createContentMarkup @ ReactDOMComponent.js?f4f2:591ReactDOMComponent.Mixin.mountComponent @ ReactDOMComponent.js?f4f2:479ReactReconciler.mountComponent @ ReactReconciler.js?9da7:37ReactCompositeComponentMixin.mountComponent @ ReactCompositeComponent.js?47a9:225ReactCompositeComponent_mountComponent @ ReactPerf.js?6da6:66ReactReconciler.mountComponent @ ReactReconciler.js?9da7:37mountComponentIntoNode @ ReactMount.js?2450:266Mixin.perform @ Transaction.js?d39c:136batchedMountComponentIntoNode @ ReactMount.js?2450:282Mixin.perform @ Transaction.js?d39c:136ReactDefaultBatchingStrategy.batchedUpdates @ ReactDefaultBatchingStrategy.js?c98c:62batchedUpdates @ ReactUpdates.js?6ba9:94ReactMount._renderNewRootComponent @ ReactMount.js?2450:476ReactMount__renderNewRootComponent @ ReactPerf.js?6da6:66ReactMount._renderSubtreeIntoContainer @ ReactMount.js?2450:550ReactMount.render @ ReactMount.js?2450:570React_render @ ReactPerf.js?6da6:66(anonymous function) @ main.js?7a2b:17(anonymous function) @ bundle.js:700__webpack_require__ @ bundle.js:535fn @ bundle.js:76(anonymous function) @ entry.js?49c3:1(anonymous function) @ bundle.js:622__webpack_require__ @ bundle.js:535fn @ bundle.js:76(anonymous function) @ bundle.js:567__webpack_require__ @ bundle.js:535(anonymous function) @ bundle.js:558(anonymous function) @ bundle.js:561 2client.js?3ac5:55 [HMR] connected :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_INCOMPLETE_CHUNKED_ENCODING :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED :3000/__webpack_hmr:1 GET http://localhost:3000/__webpack_hmr net::ERR_CONNECTION_REFUSED client.js?3ac5:55 [HMR] connected) mainly those 1st two lines

[matystl]

which files have you run? I this week i have no time i will look at it next week

[matystl]

actualy i just try it and this 3 files are working
heatpack presentation/03_react.js
heatpack redux_effects/01_start.js
heatpack pexeso_redux/main.js

[roberto68]

sorry maty, my bad, nemal som updatnuty heatpack to asi bolo tym.