diff --git a/atdb/atdb/settings/dev.py b/atdb/atdb/settings/dev.py
index 43608c906e122981a15cec2fdabfc8b8829eb61d..fc7c77cb7fa2c6a8fe81a5c624b27b6088303aaf 100644
--- a/atdb/atdb/settings/dev.py
+++ b/atdb/atdb/settings/dev.py
@@ -15,7 +15,7 @@ DATABASES = {
          'PASSWORD': 'atdb123',
          'NAME': 'atdb_ldv',
          'HOST': 'localhost',
-         'PORT': '',
+         'PORT': '5432',
     },
 }
 
diff --git a/atdb/taskdatabase/services/algorithms.py b/atdb/taskdatabase/services/algorithms.py
index 8f64e86745736a11e66d912cfeca5630341fe8ab..10720c2bad9142a297a09ff8da15f1aef6aa4a14 100644
--- a/atdb/taskdatabase/services/algorithms.py
+++ b/atdb/taskdatabase/services/algorithms.py
@@ -52,12 +52,14 @@ def get_min_start_and_max_end_time(sas_id):
     min_start_time = None
     max_end_time = None
     logger.info("get_min_start_and_max_end_time(" + str(sas_id) + ")")
-    tasks = Task.objects.filter(sas_id=sas_id).filter(status='archived') + Task.objects.filter(sas_id=sas_id).filter(status='finished')
+    tasks = Task.objects.filter(sas_id=sas_id).filter(Q(status='archived') | Q(status='finished'))
     for task in tasks:
         # If more entrees are found for 'processing' task, get the latest
-        start_time = LogEntry.objects.filter(task=task.pk).filter(step_name='running').filter(status='processing').lastest('timestamp').timestamp
+        latest_start_time = LogEntry.objects.filter(task=task.pk).filter(step_name='running').filter(status='processing').latest('timestamp')
+        start_time = latest_start_time.timestamp
         # If more entrees are found for 'processed' task, get the latest
-        end_time = LogEntry.objects.filter(task=task.pk).filter(step_name='running').filter(status='processed').lastest('timestamp').timestamp
+        lastest_end_time = LogEntry.objects.filter(task=task.pk).filter(step_name='running').filter(status='processed').latest('timestamp')
+        end_time = lastest_end_time.timestamp
         if min_start_time is None:
             min_start_time = start_time
         elif start_time < min_start_time: