Flutter 友盟推送报错， umeng_push_sdk: ^2.2.0

按照DEMO接也是报找不到推送sdk

FAILURE: Build failed with an exception.

* What went wrong:

A problem occurred configuring project ':umeng_push_sdk'.

> Could not resolve all files for configuration ':umeng_push_sdk:classpath'.

> Could not resolve org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.3.71.

Required by:

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.lint:lint-gradle-api:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:gradle-api:3.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > androidx.databinding:databinding-compiler-common:3.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools:sdk-common:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools:common:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools.build:manifest-merger:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools.analytics-library:tracker:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools:sdklib:26.6.4 > com.android.tools:repository:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools:sdk-common:26.6.4 > com.android.tools.analytics-library:shared:26.6.4

> Could not resolve org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.3.71.

> Could not get resource 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71/kotlin-stdlib-jdk8-1.3.71.pom'.

> Could not GET 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71/kotlin-stdlib-jdk8-1.3.71.pom'.

> Connect to repo.maven.apache.org:443 [repo.maven.apache.org/146.75.112.215] failed: Connection refused: no further information

> Could not resolve com.google.protobuf:protobuf-java:3.4.0.

Required by:

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:bundletool:0.10.3

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools:sdk-common:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools.analytics-library:protos:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools.analytics-library:tracker:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:bundletool:0.10.3 > com.android.tools.build:aapt2-proto:0.4.0

> Could not resolve com.google.protobuf:protobuf-java:3.4.0.

> Could not get resource 'https://repo.maven.apache.org/maven2/com/google/protobuf/protobuf-java/3.4.0/protobuf-java-3.4.0.pom'.

> Could not GET 'https://repo.maven.apache.org/maven2/com/google/protobuf/protobuf-java/3.4.0/protobuf-java-3.4.0.pom'.

> Connect to repo.maven.apache.org:443 [repo.maven.apache.org/146.75.112.215] failed: Connection refused: no further information

> Could not resolve com.google.protobuf:protobuf-java-util:3.4.0.

Required by:

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:bundletool:0.10.3

> Could not resolve com.google.protobuf:protobuf-java-util:3.4.0.

> Could not get resource 'https://repo.maven.apache.org/maven2/com/google/protobuf/protobuf-java-util/3.4.0/protobuf-java-util-3.4.0.pom'.

> Could not GET 'https://repo.maven.apache.org/maven2/com/google/protobuf/protobuf-java-util/3.4.0/protobuf-java-util-3.4.0.pom'.

> Connect to repo.maven.apache.org:443 [repo.maven.apache.org/146.75.112.215] failed: Connection refused: no further information

> Could not resolve com.google.guava:guava:27.1-jre.

Required by:

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.analytics-library:crash:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.lint:lint-gradle-api:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:gradle-api:3.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > androidx.databinding:databinding-compiler-common:3.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools:common:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools.analytics-library:tracker:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools:sdk-common:26.6.4 > com.android.tools.analytics-library:shared:26.6.4

> Could not resolve com.google.guava:guava:27.1-jre.

> Could not get resource 'https://repo.maven.apache.org/maven2/com/google/guava/guava/27.1-jre/guava-27.1-jre.pom'.

> Could not GET 'https://repo.maven.apache.org/maven2/com/google/guava/guava/27.1-jre/guava-27.1-jre.pom'.

> Connect to repo.maven.apache.org:443 [repo.maven.apache.org/146.75.112.215] failed: Connection timed out: no further information

> Could not resolve org.jetbrains.kotlin:kotlin-reflect:1.3.71.

Required by:

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.lint:lint-gradle-api:26.6.4

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools:sdk-common:26.6.4

> Could not resolve org.jetbrains.kotlin:kotlin-reflect:1.3.71.

> Could not get resource 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-reflect/1.3.71/kotlin-reflect-1.3.71.pom'.

> Could not GET 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-reflect/1.3.71/kotlin-reflect-1.3.71.pom'.

> Connect to repo.maven.apache.org:443 [repo.maven.apache.org/146.75.112.215] failed: Connection refused: no further information

> Could not resolve com.google.guava:guava:27.1-jre.

Required by:

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:bundletool:0.10.3

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android:zipflinger:3.6.4

> Could not resolve com.google.guava:guava:27.1-jre.

> Could not get resource 'https://repo.maven.apache.org/maven2/com/google/guava/guava/27.1-jre/guava-27.1-jre.pom'.

> Could not GET 'https://repo.maven.apache.org/maven2/com/google/guava/guava/27.1-jre/guava-27.1-jre.pom'.

> Connect to repo.maven.apache.org:443 [repo.maven.apache.org/146.75.112.215] failed: Connection timed out: no further information

> Could not resolve org.jetbrains.kotlin:kotlin-stdlib:1.3.41.

Required by:

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build.jetifier:jetifier-core:1.0.0-beta08

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build.jetifier:jetifier-processor:1.0.0-beta08

> Could not resolve org.jetbrains.kotlin:kotlin-stdlib:1.3.41.

> Could not get resource 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-stdlib/1.3.41/kotlin-stdlib-1.3.41.pom'.

> Could not GET 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-stdlib/1.3.41/kotlin-stdlib-1.3.41.pom'.

> Connect to repo.maven.apache.org:443 [repo.maven.apache.org/146.75.112.215] failed: Connection refused: no further information

> Could not resolve com.google.guava:guava:27.1-jre.

Required by:

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools.build:apkzlib:3.6.4

> Could not resolve com.google.guava:guava:27.1-jre.

> Could not get resource 'https://repo.maven.apache.org/maven2/com/google/guava/guava/27.1-jre/guava-27.1-jre.pom'.

> Could not GET 'https://repo.maven.apache.org/maven2/com/google/guava/guava/27.1-jre/guava-27.1-jre.pom'.

> Connect to repo.maven.apache.org:443 [repo.maven.apache.org/146.75.112.215] failed: Connection timed out: no further information

> Could not resolve com.google.guava:guava:27.1-jre.

Required by:

project :umeng_push_sdk > com.android.tools.build:gradle:3.6.4 > com.android.tools.build:builder:3.6.4 > com.android.tools:sdklib:26.6.4 > com.android.tools:repository:26.6.4 > com.google.jimfs:jimfs:1.1

> Could not resolve com.google.guava:guava:27.1-jre.

> Could not get resource 'https://repo.maven.apache.org/maven2/com/google/guava/guava/27.1-jre/guava-27.1-jre.pom'.

> Could not GET 'https://repo.maven.apache.org/maven2/com/google/guava/guava/27.1-jre/guava-27.1-jre.pom'.

> Connect to repo.maven.apache.org:443 [repo.maven.apache.org/146.75.112.215] failed: Connection timed out: no further information

> Failed to notify project evaluation listener.

> Could not get unknown property 'android' for project ':umeng_push_sdk' of type org.gradle.api.Project.

> Could not find method implementation() for arguments [project ':umeng_common_sdk'] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.

> Could not get unknown property 'android' for project ':umeng_push_sdk' of type org.gradle.api.Project.

* Try:

> Run with --stacktrace option to get the stack trace.

> Run with --info or --debug option to get more log output.

> Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 1m 3s

[!] Gradle threw an error while downloading artifacts from the network.