fix issue with equations to model operator (#2849)

packages/client/hmi-client/src/components/model/petrinet/model-diagrams/tera-model-diagram.vue

@@ -124,7 +124,9 @@ const graphLegendLabels = ref<string[]>([]);
 const graphLegendColors = ref<string[]>([]);
 const openValueConfig = ref(false);
 const selectedTransitionId = ref('');
-const modelType = computed(() => props.model?.header?.schema_name ?? AMRSchemaNames.PETRINET);
+const modelType = computed(
+	() => props.model?.header?.schema_name?.toLowerCase() ?? AMRSchemaNames.PETRINET
+);
 const templatePreview = ref('');
 const isGeneratingModelPreview = ref(false);
 

packages/client/hmi-client/src/workflow/ops/model-from-document/tera-model-from-document-node.vue

@@ -62,9 +62,12 @@ const handleChange = (event) => {
 const model = ref(null as Model | null);
 
 // Update the model preview when the active output changes
-const activeOutputId = ref(props.node?.active ?? props.node?.outputs?.[0].id);
+// TODO - Make this into a utility to fetch the active output or the first one.
+const activeOutputId = ref(props.node?.active ?? props.node?.outputs?.[0]?.id ?? null);
 const activeModelId = ref(
-	props.node?.outputs?.find((output) => output.id === activeOutputId.value)?.state?.modelId
+	activeOutputId.value
+		? props.node?.outputs?.find((output) => output.id === activeOutputId.value)?.state?.modelId
+		: null
 );
 const updateModel = async () => {
 	if (activeModelId.value) {