Error report under ionic3 - Codes Helper - Programming Question Answer

Error report under ionic3

core.js:1350 ERROR Error: Uncaught (in promise): Error: StaticInjectorError [Common]:
StaticInjectorError [Common]:

NullInjectorError: No provider for Common!

Error: StaticInjectorError [Common]:
StaticInjectorError [Common]:

NullInjectorError: No provider for Common!
at _NullInjector.get (core.js:923)
at resolveToken (core.js:1211)
at tryResolveToken (core.js:1153)
at StaticInjector.get (core.js:1024)
at resolveToken (core.js:1211)
at tryResolveToken (core.js:1153)
at StaticInjector.get (core.js:1024)
at resolveNgModuleDep (core.js:10584)
at NgModuleRef_.get (core.js:11805)
at resolveNgModuleDep (core.js:10584)
at _NullInjector.get (core.js:923)
at resolveToken (core.js:1211)
at tryResolveToken (core.js:1153)
at StaticInjector.get (core.js:1024)
at resolveToken (core.js:1211)
at tryResolveToken (core.js:1153)
at StaticInjector.get (core.js:1024)
at resolveNgModuleDep (core.js:10584)
at NgModuleRef_.get (core.js:11805)
at resolveNgModuleDep (core.js:10584)
at c (polyfills.js:3)
at c (polyfills.js:3)
at polyfills.js:3
at t.invokeTask (polyfills.js:3)
at Object.onInvokeTask (core.js:4617)
at t.invokeTask (polyfills.js:3)
at r.runTask (polyfills.js:3)
at o (polyfills.js:3)
at e.invokeTask [as invoke] (polyfills.js:3)
at p (polyfills.js:2)

defaultErrorLogger @ core.js:1350
ErrorHandler.handleError @ core.js:1411
IonicErrorHandler.handleError @ ionic-error-handler.js:61
next @ core.js:5373
schedulerFn @ core.js:4220
SafeSubscriber.__tryOrUnsub @ Subscriber.js:238
SafeSubscriber.next @ Subscriber.js:185
Subscriber._next @ Subscriber.js:125
Subscriber.next @ Subscriber.js:89
Subject.next @ Subject.js:55
EventEmitter.emit @ core.js:4200
(anonymous) @ core.js:4648 .js: 4574
onHandleError @ core.js:4648
t.handleError @ polyfills.js:3
r.runGuarded @ polyfills.js:3
(anonymous) @ polyfills.js:3
n.microtaskDrainDone @ polyfills.js:3
o @ polyfills.js:3
e.invokeTask @ polyfills.js:3
p @ polyfills.js:2
v @ polyfills.js:2

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