zeromq failing after running for a bit

I currently run a process as well as an API. These two need to communicate, more specifically the API to the process. For this I am using zeromq's python library. My code is as follows:

server.py:

from zmq import POLLIN, ROUTERfrom zmq.asyncio import Context, Pollerfrom zmq.auth.asyncio import AsyncioAuthenticator    async def start(self):"""Starts the zmq server asyncronously and handles incoming requests"""        context = Context()        auth = AsyncioAuthenticator(context)        auth.start()        auth.configure_plain(domain="*", passwords={"user": IPC_TOKEN})        auth.allow("127.0.0.1")        socket = context.socket(ROUTER)        socket.plain_server = True        socket.bind("tcp://*:5555")        poller = Poller()        poller.register(socket, POLLIN)        while True:            socks = dict(await poller.poll())            if socket in socks and socks[socket] == POLLIN:                message = await socket.recv_multipart()                identity, request = message                decoded = loads(request.decode())                res = await getattr(self, decoded["route"])(decoded["data"])                if res:                    await socket.send_multipart([identity, dumps(res).encode()])                else:                    await socket.send_multipart([identity, b'{"status":"ok"}'])

client.py:

from zmq import DEALER, POLLINfrom zmq.asyncio import Context, Pollerasync def make_request(route: str, data: dict) -> dict:    context = Context.instance()    socket = context.socket(DEALER)    socket.identity = uuid.uuid4().hex.encode('utf-8')    socket.plain_username = b"user"    socket.plain_password = IPC_TOKEN.encode("UTF-8")    socket.connect("tcp://localhost:5555")    request = json.dumps({"route": route, "data": data}).encode('utf-8')    socket.send(request)    poller = Poller()    poller.register(socket, POLLIN)    while True:        events = dict(await poller.poll())        if socket in events and events[socket] == POLLIN:            multipart = json.loads((await socket.recv_multipart())[0].decode())            socket.close()            context.term()            return multipart

This works perfectly fine for the first few requests but after a certain number of requests this code fails silently (without error) and I get no IPC responses. When I curl the API that uses this code as a client to my second process the request times out.

I assume this is because the processes are not properly closed or clogged up but I am not sure how to fix this. Here I ran an lsof command on my server after this code ran for a bit and stopped working:

How can I prevent these connections from timing out after a while?