Intellij IDEA "File decompiled.class, bytecodeversion: 52.0 (Java 8

I am new to Java (started using 1 year ago). I used the Intellij IDEA Community Edition. Today I decided to install the full version and something went wrong. It always remains in the "Decompiled" mode and does not allow editing the file or working with it. He returned to the editorial community. Same thing in Decompiled Mode. Please tell me how I can get to normal operation. Any help is appreciated

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, . ( .java) - .

( home05\Solution.java, , home05\Solution.class...)

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, "src", "out". out intellij .

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Source: https://habr.com/ru/post/1625792/