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In my working project, suddenly I am facing this issue. I did not update anything.

ERROR: Unable to resolve dependency for ':app@developmentDebug/compileClasspath': Could not find any version that matches com.google.firebase:firebase-messaging:16.0.+. Show Details Affected Modules: app

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SHIVANI GARG
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    Possible duplicate of [Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve com.google.firebase:firebase-messaging:17.1.0](https://stackoverflow.com/questions/51551190/unable-to-resolve-dependency-for-appdebug-compileclasspath-could-not-resolv) – Sree Oct 21 '19 at 11:06
  • you mistaken the version and please post gradle code. – Ashish Oct 21 '19 at 11:07

2 Answers2

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Avoid using + in version number.

Try this:

implementation 'com.google.firebase:firebase-messaging:20.0.0'
Ashish
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mohit_sharma
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The version com.google.firebase:firebase-messaging:16.x.x doesn't exist in the google maven repo.

You can check the repo.
Use one of the existing versions.

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Gabriele Mariotti
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