See https://github.com/NeuroML/pyNeuroML/pull/335 the `id` attribute of `report` contains a slash (`/`) there, which isn't permitted. LEMS file and generated SEDML attached: [LEMS_model.sedml.txt](https://github.com/NeuroML/org.neuroml.export/files/15014136/LEMS_model.sedml.txt) [LEMS_model.xml.txt](https://github.com/NeuroML/org.neuroml.export/files/15014137/LEMS_model.xml.txt)