fix bug introduced by e3b37dfd9d168e86abce6a9a44420b6fe1d1f2ce

app/rest/trend.py

@@ -57,8 +57,6 @@ def trend_internal(conn: Connection[TupleRow], path: str, query: DictProperty):
             progress.append({ "name": "Loading data", "status": ""})
             yield template("loading", progress=progress)
             data = get_data(query_manager, **fields)
-            in_chart = data['$/unit'].apply(lambda x: (x or False) and True)
-            data = data[in_chart]
             progress[-1]["status"] = "done"
             yield template("loading", progress=progress)
 
@@ -66,6 +64,9 @@ def trend_internal(conn: Connection[TupleRow], path: str, query: DictProperty):
                 yield abort(404, f"No data for {fields}")
                 return
             
+            in_chart = data['$/unit'].apply(lambda x: (x or False) and True)
+            data = data[in_chart]
+            
             progress.append({ "name": "Loading chart", "status": ""})
             yield template("loading", progress=progress)