Fail to start the KotlinLanguageServer

I downloaded the KotlinLanguageServer from VSCode Extension tab in VSCode. It working in the [KotlinQuickStart](https://github.com/fwcd/) project, but not mine.

My project hierarchy are simarly to following:
.
├── README.md
├── build.gradle
├── docs
├── gradle
│ └── wrapper
├── gradle.properties
├── gradlew
├── gradlew.bat
├── kotlin_project_a `kotlin project a`
│ ├── bin
│ ├── build
│ ├── build.gradle
│ ├── config
│ └── src
├── frontend
├── settings.gradle
├── src `kotlin project b`
├── main
└── test

I am not sure if it is because I have multiple kotlin project within the same repository.

Reproduce the startup failure using the reported repository hierarchy, including build.gradle, settings.gradle, kotlin_project_a, and src, and compare it with the KotlinQuickStart project. Start by investigating language-server startup handling for multiple Kotlin projects; done means the server starts successfully for this layout or the unsupported configuration is clearly identified.

Written by the indexing model from the issue text.