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Firebase Rest API error 403 and no access control origin header present

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@curiousP wrote:

https://firebasedynamiclinks.googleapis.com/v1/shortLinks?key=mykey
I am using the above URL and getting the dynamic link when used in postman but when I call this URL using http.post I am getting an error. I have tried the same my angular web application it working. Below is the screenshot of the console.
2polyfills.js:3 OPTIONS https://firebasedynamiclinks.googleapis.com/v1/shortLinks?key=“mykey” 403
s @ polyfills.js:3
t.scheduleTask @ polyfills.js:3
onScheduleTask @ polyfills.js:3
t.scheduleTask @ polyfills.js:3
r.scheduleTask @ polyfills.js:3
r.scheduleMacroTask @ polyfills.js:3
(anonymous) @ polyfills.js:3
o. @ polyfills.js:2
(anonymous) @ http.js:2364
Observable._trySubscribe @ Observable.js:172
Observable.subscribe @ Observable.js:160
FinallyOperator.call @ finalize.js:26
Observable.subscribe @ Observable.js:157
CatchOperator.call @ catchError.js:79
Observable.subscribe @ Observable.js:157
subscribeToResult @ subscribeToResult.js:23
MergeMapSubscriber._innerSub @ mergeMap.js:132
MergeMapSubscriber._tryNext @ mergeMap.js:129
MergeMapSubscriber._next @ mergeMap.js:112
Subscriber.next @ Subscriber.js:93
ScalarObservable._subscribe @ ScalarObservable.js:49
Observable._trySubscribe @ Observable.js:172
Observable.subscribe @ Observable.js:160
MergeMapOperator.call @ mergeMap.js:87
Observable.subscribe @ Observable.js:157
FilterOperator.call @ filter.js:60
Observable.subscribe @ Observable.js:157
MapOperator.call @ map.js:56
Observable.subscribe @ Observable.js:157
webpackJsonp.359.page.createDynamicLink @ page.ts:127
handleEvent @ core.js:13589
callWithDebugContext @ core.js:15098
debugHandleEvent @ core.js:14685
dispatchEvent @ core.js:10004
(anonymous) @ core.js:10629
(anonymous) @ platform-browser.js:2628
t.invokeTask @ polyfills.js:3
onInvokeTask @ core.js:4751
t.invokeTask @ polyfills.js:3
r.runTask @ polyfills.js:3
e.invokeTask @ polyfills.js:3
p @ polyfills.js:2
v @ polyfills.js:2
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:8100/#:1 Access to XMLHttpRequest at ‘https://firebasedynamiclinks.googleapis.com/v1/shortLinks?key=’ from origin ‘http://localhost:8100’ has been blocked by CORS policy: Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.
core.js:1449 ERROR HttpErrorResponse {headers: HttpHeaders, status: 0, statusText: “Unknown Error”, url: null, ok: false, …}

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