---
tags: AndroidStudio
---

# Android Studio Dolphin 2021.3.1 專案編譯失敗 message: null

## Android Studio 版本資訊

Android Studio Dolphin | 2021.3.1 Patch 1
Build #AI-213.7172.25.2113.9123335, built on September 30, 2022
Runtime version: 11.0.13+0-b1751.21-8125866 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Windows 10 10.0
GC: G1 Young Generation, G1 Old Generation
Memory: 4096M
Cores: 16
Registry:
    external.system.auto.import.disabled=true
    ide.text.editor.with.preview.show.floating.toolbar=false

Non-Bundled Plugins:
    one.util.ideaplugin.screenshoter (1.8)
    org.intellij.plugins.markdown (213.6777.22)
    com.wzc.sw.plugin (1.3.1)
    com.duke.screenmatch (3.1)
    com.google.mad-scorecard (1.2)
    com.developerphil.adbidea (1.6.8)
    com.godwin.kdocer (1.6)

## 問題說明


Android Studio 更新至 2021.3.1 版本後，專案建置出現上面圖片呈現的問題。
無法編譯成功，而且錯誤訊息只有 null。

### 已嘗試過的方式

1. Invalid cache and restart IDE
2. Update gradle versions

## 解決方式

查到的資料 [Dolphin: Project sync fails with "null" message](https://issuetracker.google.com/issues/247244491) 說

> Details: caused by unloaded sub-project.
> In a project, add this to settings.gradle: include ':test'
> Then unload it in Load/Unload Modules tool.
> Try to Sync project, and you'll get null message and failure.
> It seems that project unloading becomes useless with this bug present.

:::info
查了一輪專案內的 module，發現其中一個項目 `chip-navigation-bar-dh-modified` 已經沒有引用但是沒有從專案內移除，因此將 `settings.gradle` 中的 `include ':chip-navigation-bar-dh-modified'` 移除再重新 sync 就解決了。
:::