'dar' 不是内部或外部命令，也不是可运行的程序 或批处理文件

Question

I created the new Flutter project on android studio. Then I try to run it but it gives this error. My previous projects are running properly. If anyone can solve this?

Launching lib\main.dart on Redmi Note 9 Pro in debug mode...
Running Gradle task 'assembleDebug'...
'dar' is not recognized as an internal or external command,
operable program or batch file.
Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain
Caused by: java.lang.ClassNotFoundException: org.gradle.wrapper.GradleWrapperMain
Exception: Gradle task assembleDebug failed with exit code 1

Then try flutter run result is same

PS E:\Intern\26-light & dar theme\untitled1> flutter run
Launching lib\main.dart on Redmi Note 9 Pro in debug mode...
'dar' is not recognized as an internal or external command,
operable program or batch file.
Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain
Caused by: java.lang.ClassNotFoundException: org.gradle.wrapper.GradleWrapperMain
Running Gradle task 'assembleDebug'...                             660ms
Exception: Gradle task assembleDebug failed with exit code 1

Answer 1

The error occurred on the path of the project: E:\Intern\26-light & dar theme\untitled1 . The problem was caused by using spaces in the file name 26-light & dar theme . To fix the issue, create the project in a different location without spaces in the file name. (Avoid using special characters such as "&" in file names to prevent errors from occurring. It is best practice to use only alphanumeric characters and underscores in file names.)