Running PyCharm 2019.1.2 gives warnings on Ubuntu 18.04.

Answered

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.

 

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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.

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Thank you Sergey.

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

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I'm using Fedora 30 and had the same error. The program just doesn't start.

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Everyone who can't start their PyCharm, try a clean reinstall to the latest version: https://www.jetbrains.com/pycharm/download

Delete config directory: https://intellij-support.jetbrains.com/hc/en-us/articles/206544519

And if it's not helping, please submit a support request: https://intellij-support.jetbrains.com/hc/en-us/?pycharm

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