org.gradle.internal.resource.transport.http.HttpRequestException: Could not HEAD 'https://dl.google.com/dl/android/maven2/org/jetbrains/annotations/13.0/annotations-13.0.pom'.
谢谢你的回答,但现在我又遇到了另一个错误:org.gradle.internal.resource.transport.http.HttpErrorStatusCodeException: Could not HEAD 'https://jcenter.bintray.com/org/bouncycastle/bcprov-jdk15on/1.56/bcprov-jdk15on-1.56.pom'. Received status code 504 from server: Gateway Time-out. - Joan P.
org.gradle.internal.resource.transport.http.HttpErrorStatusCodeException: Could not HEAD 'https://jcenter.bintray.com/org/bouncycastle/bcprov-jdk15on/1.56/bcprov-jdk15on-1.56.pom'. Received status code 504 from server: Gateway Time-out
. - Joan P.