fix: issue where nil param values caused dereference errors

server/workflow_template_server.go

@@ -18,9 +18,11 @@ func NewWorkflowTemplateServer() *WorkflowTemplateServer {
 }
 
 func apiWorkflowTemplate(wft *v1.WorkflowTemplate) *api.WorkflowTemplate {
-
 	var aParams []*api.Parameter
 	for _, p := range wft.Parameters {
+		if p.Value == nil {
+			continue
+		}
 		ap := api.Parameter{
 			Name:  p.Name,
 			Value: *p.Value,