Running PyCharm 2019.1.2 gives warnings on Ubuntu 18.04. Follow

Answered

Created May 08, 2019 11:30

Hi,

I've just installed PyCharm and running it gives the following warnings:

OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.intellij.ide.ClassUtilCore to field sun.net.www.protocol.jar.JarFileFactory.fileCache
WARNING: Please consider reporting this to the maintainers of com.intellij.ide.ClassUtilCore
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

Should we ignore these warnings?

Thanks for any help.

3 comments

Sergey Karpov

Created May 08, 2019 11:42

Hi,

These warnings are harmless. You can just ignore them.
Here is a corresponding issue in our tracker https://youtrack.jetbrains.com/issue/IDEA-205954, feel free to vote and follow for updates.

smithy

Created May 08, 2019 15:06

Thank you Sergey.

Lgrah

Created August 30, 2019 17:04

I have this error too on Ubuntu 18.04. Unfortunately, PyCharm doesn't open.

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