Our API/scripting environment is part of the CAD/GUI and will always require a GUI interface/connection to the machine running the API/script. >>>Lumerical product components and licensing overview – Ansys Optics >>>Python API overview – Ansys Optics
We recommend running this from the Lumerical CAD > script editor window on a machine with a GUI interface/connection.
Otherwise, a workaround would be to run with Xvfb (virtual display). *Take note that this workaround is provided as is and might not work for certain Linux installations. >>> Running CAD jobs on headless Linux systems – Ansys Optics
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