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I've been getting this error since I started using appbuilder, but never reported it because it didn't seem to have any affect.
"GET http://local/content/shared/images/patterns/pattern3.png jquery.min.js:5"
Expanded mess of detail:
GET http://local/content/shared/images/patterns/pattern3.png jquery.min.js:5e.getComputedStyle.Wtjquery.min.js:5b.extend.cssjquery.min.js:5(anonymous function)jquery.min.js:5b.extend.accessjquery.min.js:3b.fn.extend.cssjquery.min.js:5nkendo.mobile.min.js:15a.extend.refreshkendo.mobile.min.js:15b.isFunction.ijquery.min.js:3n.extend.triggerkendo.mobile.min.js:9d.extend.attachkendo.mobile.min.js:14d.extend.showStartkendo.mobile.min.js:14d.extend.switchWithkendo.mobile.min.js:14F.extend._showkendo.mobile.min.js:14okendo.mobile.min.js:14F.extend.showViewkendo.mobile.min.js:14historyCallbackkendo.mobile.min.js:14(anonymous function)kendo.mobile.min.js:14n.extend.triggerkendo.mobile.min.js:9o.extend._urlChangedkendo.mobile.min.js:13okendo.mobile.min.js:13n.extend.triggerkendo.mobile.min.js:9i.Observable.extend.navigatekendo.mobile.min.js:13o.extend.navigatekendo.mobile.min.js:13n._historyNavigatekendo.mobile.min.js:14o.extend.navigatekendo.mobile.min.js:14l.Observable.extend.navigatekendo.mobile.min.js:15(anonymous function)recalls.js:27cjquery.min.js:3p.fireWithjquery.min.js:3kjquery.min.js:5r
"GET http://local/content/shared/images/patterns/pattern3.png jquery.min.js:5"
Expanded mess of detail:
GET http://local/content/shared/images/patterns/pattern3.png jquery.min.js:5e.getComputedStyle.Wtjquery.min.js:5b.extend.cssjquery.min.js:5(anonymous function)jquery.min.js:5b.extend.accessjquery.min.js:3b.fn.extend.cssjquery.min.js:5nkendo.mobile.min.js:15a.extend.refreshkendo.mobile.min.js:15b.isFunction.ijquery.min.js:3n.extend.triggerkendo.mobile.min.js:9d.extend.attachkendo.mobile.min.js:14d.extend.showStartkendo.mobile.min.js:14d.extend.switchWithkendo.mobile.min.js:14F.extend._showkendo.mobile.min.js:14okendo.mobile.min.js:14F.extend.showViewkendo.mobile.min.js:14historyCallbackkendo.mobile.min.js:14(anonymous function)kendo.mobile.min.js:14n.extend.triggerkendo.mobile.min.js:9o.extend._urlChangedkendo.mobile.min.js:13okendo.mobile.min.js:13n.extend.triggerkendo.mobile.min.js:9i.Observable.extend.navigatekendo.mobile.min.js:13o.extend.navigatekendo.mobile.min.js:13n._historyNavigatekendo.mobile.min.js:14o.extend.navigatekendo.mobile.min.js:14l.Observable.extend.navigatekendo.mobile.min.js:15(anonymous function)recalls.js:27cjquery.min.js:3p.fireWithjquery.min.js:3kjquery.min.js:5r