Scrub watch snapshot fixes

changedetectionio/store.py

@@ -304,7 +304,7 @@ class ChangeDetectionStore:
         if not limit_timestamp:
             self.data['watching'][uuid]['last_checked'] = 0
             self.data['watching'][uuid]['last_changed'] = 0
-                    self.data['watching'][uuid]['previous_md5'] = 0
+            self.data['watching'][uuid]['previous_md5'] = ""
 
 
         for timestamp in del_timestamps:
@@ -323,7 +323,7 @@ class ChangeDetectionStore:
                             content = fp.read()
                         self.data['watching'][uuid]['previous_md5'] = hashlib.md5(content).hexdigest()
                     except (FileNotFoundError, IOError):
-                        self.data['watching'][uuid]['previous_md5'] = False
+                        self.data['watching'][uuid]['previous_md5'] = ""
                         pass
 
         self.needs_write = True

changedetectionio/update_worker.py

@@ -60,7 +60,7 @@ class update_worker(threading.Thread):
                         self.datastore.update_watch(uuid=uuid, update_obj={'last_error': err_text,
                                                                            'last_check_status': e.status_code})
                     except Exception as e:
-                        self.app.logger.error("Exception reached processing watch UUID:%s - %s", uuid, str(e))
+                        self.app.logger.error("Exception reached processing watch UUID: %s - %s", uuid, str(e))
                         self.datastore.update_watch(uuid=uuid, update_obj={'last_error': str(e)})
 
                     else: