Gradle task failed with no error output

kotlin-language-server version: 0.4.0
Gradle version: 6.0
Client: NeoVim + SpaceVim + LanguageClient-neovim

After open a gradle project(kotlin dsl buildscript), there is no autocomplete, hover... even error like "Unresolved Reference". Then check log only got this

Reproduce the report with kotlin-language-server 0.4.0, Gradle 6.0, a Kotlin DSL Gradle project, and the NeoVim/LanguageClient-neovim setup described. Start by inspecting the available log output around Gradle startup; done means the failure has an actionable error and the project's autocomplete, hover, and diagnostics work.

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