Building snappy problem(snappy process Sentinel 1a GRD data)?

When I finished the SNAP software and finished the configuration of Python 3.4.4 and snappy, the following problems occurred when using sentinel 1A data test 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
[‘radiance_1’, ‘radiance_2’, ‘radiance_3’, ‘radiance_4’, ‘radiance_5’, ‘radiance_6’, ‘radiance_7’, ‘radiance_8’, ‘radiance_9’, ‘radiance_10’, ‘radiance_11’, ‘radiance_12’, ‘radiance_13’, ‘radiance_14’, ‘radiance_15’, ‘l1_flags’, ‘detector_index’]
Please help me solve the problem.

There is no problem visible.
You are just informed that the internal GDAL version will be used.
That is not a problem

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Thank you for your reply?