fix issue

templates/repo/settings/options.tmpl

@@ -152,7 +152,7 @@
 				{{$isModelMangeEnabled := .Repository.UnitEnabled $.UnitTypeModelManage }}
 				<div class="inline field">
 					<label>{{.i18n.Tr "repo.model_manager"}}</label>
-					<div class="ui checkbox">
+					<div class="ui checkbox {{if  eq $.MODEL_COUNT 0}}disabled{{end}}">
 						<input class="enable-system" name="enable_model_manager" type="checkbox" {{if $isModelMangeEnabled}}checked{{end}}>
 						<label>{{.i18n.Tr "repo.settings.model_desc"}}</label>
 					</div>
@@ -625,4 +625,4 @@
 	{{end}}
 {{end}}
 
-{{template "base/footer" .}}
+{{template "base/footer" .}}