path - 运行 JModelica 命令时出现警告（根 MODELICAPATH）

Question

在 JModelica 命令运行期间，例如compile_fmu我收到以下警告：

WARNING:root:MODELICAPATH: Path "%MODELICAPATH%" does not exist. Environment may be corrupt.
WARNING:root:MODELICAPATH: Path "" does not exist. Environment may be corrupt.
WARNING:root:MODELICAPATH: Path "" does not exist. Environment may be corrupt.

有谁知道为什么会这样？