java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference

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    • java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference at libcore.net.UriCodec.encode(UriCodec.java:132) at java.net.URLEncoder.encode(URLEncoder.java:57) at com.microsoft.aad.adal.StringExtensions.URLFormEncode(StringExtensions.java:83) at com.microsoft.aad.adal.Oauth2.buildRefreshTokenRequestMessage(Oauth2.java:177) at com.microsoft.aad.adal.Oauth2.refreshToken(Oauth2.java:302) at com.microsoft.aad.adal.AcquireTokenSilentHandler.acquireTokenWithRefreshToken(AcquireTokenSilentHandler.java:126) at com.microsoft.aad.adal.AcquireTokenSilentHandler.acquireTokenWithCachedItem(AcquireTokenSilentHandler.java:269) at com.microsoft.aad.adal.AcquireTokenSilentHandler.useMRRT(AcquireTokenSilentHandler.java:261) at com.microsoft.aad.adal.AcquireTokenSilentHandler.tryMRRT(AcquireTokenSilentHandler.java:203) at com.microsoft.aad.adal.AcquireTokenSilentHandler.tryRT(AcquireTokenSilentHandler.java:161) at com.microsoft.aad.adal.AcquireTokenSilentHandler.getAccessToken(AcquireTokenSilentHandler.java:104) at com.microsoft.aad.adal.AuthenticationContext.localFlow(AuthenticationContext.java:1461) at com.microsoft.aad.adal.AuthenticationContext.acquireTokenAfterValidation(AuthenticationContext.java:1448) at com.microsoft.aad.adal.AuthenticationContext.acquireTokenLocalCall(AuthenticationContext.java:1261) at com.microsoft.aad.adal.AuthenticationContext.access$900(AuthenticationContext.java:73) at com.microsoft.aad.adal.AuthenticationContext$7.run(AuthenticationContext.java:1220) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) at java.lang.Thread.run(Thread.java:818)

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