if you could not fix anyway. and if you are inside firewall.
then.
you may can not download https.
should fix that Edit gradle-wrapper.properties file.
vi [project]/gradle/wrapper/gradle-wrapper.properties
#distributionUrl=https\://services.gradle.org/distributions/gradle-2.8-bin.zip
distributionUrl=http\://services.gradle.org/distributions/gradle-2.8-bin.zip
change from https to http…
http://blog.cjred.net/gradlew-bat-and-gradlew-sslhandshakeexception/
After I modified, it says: Server returned HTTP response code: 403 for URL: http://services.gradle.org/distributions/gradle-6.0.1-all.zip