问为什么导入imsdk错误？

dependencies {
    implementation 'com.tencent.imsdk:tuikit: 5.1.56'
    }

我用gradle导入imsdk

报错内容：

Execution failed for task ':app:checkDebugAarMetadata'.

> Could not resolve all files for configuration ':app:debugRuntimeClasspath'.

> Could not find com.tencent.imsdk:tuikit: 5.1.56.

Searched in the following locations:

- https://dl.google.com/dl/android/maven2/com/tencent/imsdk/tuikit/ 5.1.56/tuikit- 5.1.56.pom

- https://jcenter.bintray.com/com/tencent/imsdk/tuikit/ 5.1.56/tuikit- 5.1.56.pom

Required by:

project :app

Possible solution:

- Declare repository providing the artifact, see the documentation at https://docs.gradle.org/current/userguide/declaring_repositories.html