The project was fine before it was opened for a period of time, and then an error was suddenly reported after it was opened. After understanding it, it is found that deleting the gradle.xml file in the. Idea file and then rebuilding it can be generated automatically;

After comparing the previous documents, it is found that a label is missing in the document:

<option name="gradleJvm" value="11" />

The value values of different JDK versions are different, so to be on the safe side, do not modify or add the values inside. Just delete the file and regenerate it;