我最近将我的角度应用程序从2.0.1更新为4.0.0。该应用程序正在运行，但未显示在浏览器上。该错误似乎表明聚合物问题。我尝试更新Bower依赖性，但仍然出现如下错误：
Uncaught TypeError: Cannot read property 'calendar' of undefined
at HTMLElement.ready (paper-date-picker.html:298)
at HTMLElement._readySelf (polymer-mini.html:165)
at HTMLElement._ready (polymer-mini.html:145)
at HTMLElement._tryReady (polymer-mini.html:130)
at HTMLElement._initFeatures (polymer.html:4222)
at HTMLElement.__initialize (polymer-micro.html:235)
at HTMLElement.createdCallback (polymer-micro.html:218)
at ZoneDelegate.invoke (zone.js:365)
at Zone.runGuarded (zone.js:138)
at HTMLElement.createdCallback (zone.js:116)
ready @ paper-date-picker.html:298
_readySelf @ polymer-mini.html:165
_ready @ polymer-mini.html:145
_tryReady @ polymer-mini.html:130
_initFeatures @ polymer.html:4222
__initialize @ polymer-micro.html:235
createdCallback @ polymer-micro.html:218
ZoneDelegate.invoke @ zone.js:365
Zone.runGuarded @ zone.js:138
(anonymous) @ zone.js:116
hardware.js:42 Uncaught TypeError: Cannot read property 'appendChild' of null
at errorLog (hardware.js:42)
errorLog @ hardware.js:42
error (async)
(anonymous) @ hardware.js:27
5polymer-micro.html:764 Polymer::Attributes: couldn`t decode Array as JSON
deserialize @ polymer-micro.html:764
_setAttributeToProperty @ polymer-micro.html:725
_takeAttributesToModel @ polymer-micro.html:714
_marshalAttributes @ polymer.html:1981
_initFeatures @ polymer.html:4221
__initialize @ polymer-micro.html:235
createdCallback @ polymer-micro.html:218
ZoneDelegate.invoke @ zone.js:365
Zone.runGuarded @ zone.js:138
(anonymous) @ zone.js:116
iron-list.html:964 iron-list requires a template to be provided in light-dom
_ensureTemplatized @ iron-list.html:964
_createPool @ iron-list.html:851
_itemsChanged @ iron-list.html:1072
_complexObserverEffect @ polymer.html:1626
_effectEffects @ polymer.html:1461
_propertySetter @ polymer.html:1445
__setProperty @ polymer.html:1454
_applyConfig @ polymer.html:2067
_afterClientsReady @ polymer.html:2061
_ready @ polymer-mini.html:144
_tryReady @ polymer-mini.html:130
_initFeatures @ polymer.html:4222
__initialize @ polymer-micro.html:235
createdCallback @ polymer-micro.html:218
ZoneDelegate.invoke @ zone.js:365
Zone.runGuarded @ zone.js:138
(anonymous) @ zone.js:116
HtmlBridgeMock.js:17 [Mock wrapper] LOG: |FRONTEND| |JAVASCRIPT ERROR| Uncaught TypeError: this.ctor is not a constructor
HtmlBridgeMock.js:17 [Mock wrapper] LOG: |FRONTEND| |JAVASCRIPT ERROR| @url http://localhost:9080/node_modules/zone.js/dist/zone.js
HtmlBridgeMock.js:17 [Mock wrapper] LOG: |FRONTEND| |JAVASCRIPT ERROR| @lineNumber 142
zone.js:142 Uncaught TypeError: this.ctor is not a constructor
at HTMLElement.stamp (polymer.html:4605)
at HTMLElement._createPool (iron-list.html:854)
at HTMLElement._itemsChanged (iron-list.html:1072)
at HTMLElement._complexObserverEffect (polymer.html:1626)
at HTMLElement._effectEffects (polymer.html:1461)
at HTMLElement._propertySetter (polymer.html:1445)
at HTMLElement.__setProperty (polymer.html:1454)
at HTMLElement._applyConfig (polymer.html:2067)
at HTMLElement._afterClientsReady (polymer.html:2061)
at HTMLElement._ready (polymer-mini.html:144)
at HTMLElement._tryReady (polymer-mini.html:130)
at HTMLElement._initFeatures (polymer.html:4222)
at HTMLElement.__initialize (polymer-micro.html:235)
at HTMLElement.createdCallback (polymer-micro.html:218)
at ZoneDelegate.invoke (zone.js:365)
Bower依赖项的版本：
"paper-card": "PolymerElements/paper-card#1.0.9",
"iron-list": "PolymerElements/iron-list#1.3.7",
"iron-scroll-threshold": "PolymerElements/iron-scroll-threshold#1.0.1",
"paper-radio-group": "PolymerElements/paper-radio-group#1.0.9",
"iron-selector": "PolymerElements/iron-selector#1.0.8",
"paper-dropdown-menu": "PolymerElements/paper-dropdown-menu#1.1.2",
"paper-listbox": "polymerelements/paper-listbox#1.1.0",
"iron-icon": "PolymerElements/iron-icon#1.0.7",
"iron-icons": "PolymerElements/iron-icons#1.0.6",
"paper-input": "PolymerElements/paper-input#1.1.5",
"paper-ripple": "PolymerElements/paper-ripple#1.0.5",
"iron-a11y-keys-behavior": "PolymerElements/iron-a11y-keys-behavior#1.1.1",
"paper-fab": "PolymerElements/paper-fab#1.1.2",
"paper-toolbar": "PolymerElements/paper-toolbar#1.1.2",
"paper-tabs": "PolymerElements/paper-tabs#1.2.5",
"paper-icon-button": "PolymerElements/paper-icon-button#1.0.6",
"paper-button": "PolymerElements/paper-button#1.0.11",
"iron-form": "PolymerElements/iron-form#1.0.13",
"iron-pages": "PolymerElements/iron-pages#1.0.5",
"iron-flex-layout": "PolymerElements/iron-flex-layout#1.2.2",
"paper-header-panel": "PolymerElements/paper-header-panel#1.1.2",
"paper-styles": "PolymerElements/paper-styles#1.1.2",
"paper-radio-button": "PolymerElements/paper-radio-button#1.0.12",
"paper-checkbox": "PolymerElements/paper-checkbox#1.1.0",
"paper-item": "PolymerElements/paper-item#1.1.3",
"paper-menu": "PolymerElements/paper-menu#1.2.2",
"paper-dialog": "PolymerElements/paper-dialog#1.0.4",
"moment": "2.11.1",
"paper-date-picker": "polymer-paper-datepicker#1.1.2",
"moment-element": "bendavis78/moment-element#1.1.0",
"iron-image": "PolymerElements/iron-image#1.2.2",
"neon-animation": "PolymerElements/neon-animation#1.2.4",
"paper-progress": "PolymerElements/paper-progress#1.0.8",
"iron-range-behavior": "PolymerElements/iron-range-behavior#1.0.4",
"paper-dialog-scrollable": "PolymerElements/paper-dialog-scrollable#1.1.1",
"iron-a11y-keys": "PolymerElements/iron-a11y-keys#1.0.4",
"gold-email-input": "PolymerElements/gold-email-input#1.0.6",
"gold-phone-input": "PolymerElements/gold-phone-input#1.0.7",
"paper-select": "0.2.1",
"i18n-msg": "1.0.3",
"js-xlsx": "0.8.0",
"alasql": "0.2.2",
"paper-toast": "PolymerElements/paper-toast#1.1.3",
"paper-drawer-panel": "PolymerElements/paper-drawer-panel#1.0.6",
"paper-tooltip": "PolymerElements/paper-tooltip#1.1.2",
"polymer": "1.2.4",
"iron-validatable-behavior": "PolymerElements/iron-validatable-behavior#1.1.1",
"iron-media-query": "PolymerElements/iron-media-query#1.0.8",
"prism-element": "PolymerElements/prism-element#1.1.0",
"webcomponentsjs": "Polymer/webcomponentsjs#0.7.22",
"iron-ajax": "PolymerElements/iron-ajax#1.2.0",
"iron-dropdown": "PolymerElements/iron-dropdown#1.4.1",
"paper-dialog-behavior": "PolymerElements/paper-dialog-behavior#1.2.6",
"paper-behaviors": "PolymerElements/paper-behaviors#1.0.11",
"paper-menu-button": "PolymerElements/paper-menu-button#1.1.1",
"iron-input": "PolymerElements/iron-input#1.0.10",
"paper-material": "PolymerElements/paper-material#1.0.6",
"iron-meta": "PolymerElements/iron-meta#1.1.1",
"iron-resizable-behavior": "PolymerElements/iron-resizable-behavior#1.0.3",
"iron-a11y-announcer": "PolymerElements/iron-a11y-announcer#1.0.4",
"iron-scroll-target-behavior": "PolymerElements/iron-scroll-target-behavior#1.0.6",
"iron-autogrow-textarea": "PolymerElements/iron-autogrow-textarea#1.0.12",
"iron-behaviors": "PolymerElements/iron-behaviors#1.0.16",
"iron-checked-element-behavior": "PolymerElements/iron-checked-element-behavior#1.0.4",
"iron-collapse": "PolymerElements/iron-collapse#1.0.8",
"iron-fit-behavior": "PolymerElements/iron-fit-behavior#1.2.1",
"iron-form-element-behavior": "PolymerElements/iron-form-element-behavior#1.0.6",
"iron-menu-behavior": "PolymerElements/iron-menu-behavior#1.1.10",
"iron-overlay-behavior": "PolymerElements/iron-overlay-behavior#1.7.6",
"iron-resizable": "PolymerElements/iron-resizable#1.0.3",
"iron-iconset-svg": "PolymerElements/iron-iconset-svg#1.0.9"
},
"devDependencies": {
"paper-datatable": "0.9.8",
"alasql": "0.2.2"
},
"resolutions": {
"paper-checkbox": "1.1.0",
"paper-item": "1.1.3",
"paper-styles": "1.1.2",
"polymer": "1.11.3",
"webcomponentsjs": "^0.7.24",
"iron-resizable-behavior": "1.0.3",
"paper-input": "^1.0.0"
}
}
当Angular的版本为2.0.1时，应用程序出现任何麻烦。
有人遇到类似的问题吗？
答案 0 :(得分：0)
所以我发现了问题所在。我按照Angular官方指南更新了angular的版本。在指南中，指定通过ng-template更改每个标签。我也更改了聚合物元素的模板，这是错误的。我需要保留模板。