Update dashboard.py

dashboard.py

@@ -151,7 +151,9 @@ grouping_filtered = pd.read_csv(os.path.join(data_folder, 'dna_relations.tsv'),
 
 
 def load_topic2toptasks():
-    mapping = json.load(os.path.join(data_folder+'/time_series','topic2toptasks.json'))
+    with open(os.path.join(data_folder+'/time_series','topic2toptasks.json'), "r", encoding="utf-8") as file:
+        mapping = json.load(file)
+
     return mapping