1. Error Messages:

Clearing build system data...
Executing pre-compile tasks...
Loading Ant configuration...
Running Ant tasks...
Cleaning output directories...
Running 'before' tasks
Checking sources
Finished, saving caches...
gradle-resources-test:Groovy_Demo.main: java.lang.NoClassDefFoundError: org/apache/tools/ant/util/ReaderInputStream
Executing post-compile tasks...
Loading Ant configuration...
Running Ant tasks...
Synchronizing output directories...
2022/1/10 11:08 - Build completed with 1 error and 0 warnings in 1 sec, 657 ms

2. Solution

Right-click the project root directory, select the “Open Module Settings” option,

Delete the main and test options in Modules,

Then select the menu bar “Build / Rebuild Project” option to recompile the project;

The project compiles through ;