Flutter集成agora_uikit:^1.3.10时出现Unresolved reference: Registrar编译错误求助

大家好，我在Flutter项目里用了agora_uikit: ^1.3.10这个依赖包，但是尝试运行应用的时候碰到了编译异常，具体的错误信息如下：

../../.Pub/Cache/hosted/pub.dev/agora_rtm-1.5.9/android/src/main/kotlin/io/agora/agorartm/AgoraRtmPlugin.kt:36:37 Unresolved reference: Registrar
FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':agora_rtm:compileDebugKotlin'.
> A failure occurred while executing org.jetbrains.kotlin.compilerRunner.GradleCompilerRunn

有没有小伙伴遇到过类似的问题呀？麻烦帮忙指点一下解决办法，谢谢啦！

备注：内容来源于stack exchange，提问作者Ganesh