JAVA - can't imort src/test/java to src/main/java

I have created an E2E testing project, initially, all the java classes were in 'src/test/java", but now I want to move all the files that do not contain tests to the "src/main/java" folder, the problem is after I do it:
I can't import packages from "src/test/java" to "src/main/java" (but can do the opposite). like the packages do not exist at all for import.

Cleaned the project and tried to run via IDE and via maven and it does not change the result.

What am I doing wrong?