我正尝试通过遵循Apache Beam文档https://beam.apache.org/documentation/dsls/sql/walkthrough/
在apache Beam上对Google云存储上的两个数据集实施SQL但是我结束了以下异常： 执行Java类时发生异常。 org.apache.beam.sdk.transforms.MapElements .via（Lorg / apache / beam / sdk / transforms / SimpleFunction;）Lorg / apache / beam / sdk / transforms / MapElements;
我尝试更改Beam-sdk-version和其他代码更改，但都无济于事。
(base) $ conda activate base
(base) $ conda activate /Users/drf/anaconda/envs/arc
(arc) $ conda activate /Users/drf/anaconda/envs/grids
(grids) $ conda activate /Users/drf/anaconda/envs/junk
(junk) $ conda activate /Users/drf/anaconda/envs/msr
(msr) $ conda activate /Users/drf/anaconda/envs/py27
(py27) $ conda activate /Users/drf/anaconda/envs/py37
(py37) $