A problem in function assertSdkRoot()

I try to run script expo start --android in my react native app. I get the error ANDROID_HOME is set to a non-existing path. Android SDK is in C:\Android\SDK folder and i set the ANDROID_HOME variable. The problim is in function assertSdkRoot() in module \node_modules@expo\cli\build\src\start\platforms\android\AndroidSdk.js:
_fs.default.existsSync(process.env.ANDROID_HOME) return false, but path is correct. The call of fs.existsSync in a standalone js file with this path return true.
What do i need to change in my environment settings (or something else) to aviod this problem?