UI changes

main.py

@@ -452,8 +452,8 @@ def check_year():
 def mat_credit():
 
     mat= MatCreditHandler()
-
     mat_rows, utilization_rows = mat.fetch_all()
+    mat.close()
 
     utilization_map = {}
     all_years = set()
@@ -492,7 +492,6 @@ def save_mat_all():
         return jsonify({"error": str(e)}), 500
 
 
-
 # run 
 if __name__ == '__main__':
       app.run(host='0.0.0.0', port=5003, debug=True)