Issue with rospy registering replayed topics' URIs

[vittoriouss]

Hello. I'm currently working on a project that requires us to replay certain command topics. I keep on getting this error whenever I replay. This happens randomly and not consistently. I was wondering if anyone had the same issue previously and may know how to solve this.

Exception in thread Thread-2:
Traceback (most recent call last):
File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
self.run()
File "/usr/lib/python2.7/threading.py", line 754, in run
self.__target(*self.__args, **self.__kwargs)
File "/opt/ros/melodic/lib/python2.7/dist-packages/rospy/impl/registration.py", line 276, in start
self.run()
File "/opt/ros/melodic/lib/python2.7/dist-packages/rospy/impl/registration.py", line 315, in run
for uri in uris:
TypeError: 'int' object is not iterable