Update app3.py

app3.py

@@ -234,7 +234,7 @@ def search_models(str_search,tags_plus_models=tags_plus_models,models_plus_tags=
             output1+="\"" + m + "\",\n"
     outputPlus="\n From tags : \n\n"
     for tag_plus_models in tags_plus_models:
-        if str_search in tag_plus_models[0]:
+        if str_search in tag_plus_models[0] and str_search!="":
             for m in tag_plus_models[2]:
                 output2+="\"" + m + "\",\n"
     if output2 != "":