building snappy problem?

When I installed SNAP software and finished the configuration of Python 3.4.4 and snappy, the following problems occurred in testing in pycharm:
INFO: org.esa.snap.core.gpf.operators.tooladapter.ToolAdapterIO: Initializing external tool adapters
INFO: org.esa.s2tbx.dataio.gdal.GDALVersion: GDAL not found on system. Internal GDAL 3.0.0 from distribution will be used. (f1)
INFO: org.esa.s2tbx.dataio.gdal.GDALVersion: Internal GDAL 3.0.0 set to be used by SNAP.
INFO: org.esa.snap.core.util.EngineVersionCheckActivator: Please check regularly for new updates for the best SNAP experience.
INFO: org.esa.s2tbx.dataio.gdal.GDALVersion: Internal GDAL 3.0.0 set to be used by SNAP.
INFO: org.hsqldb.persist.Logger: dataFileCache open start
I hope you can help me to see how to solve it?

These are actually no errors. Just info messages.
Do you experience any other problem?

Thank you very much for your reply! I don’t have any questions at present.