Make sure that _id field is present in redis MQ

hexlib/mq.py

@@ -120,7 +120,7 @@ class RedisMQ(MessageQueue):
             task_json = orjson.loads(task)
             topic = topic.decode()
 
-            if "_id" not in task_json:
+            if "_id" not in task_json or not task_json["_id"]:
                 raise ValueError(f"Task doesn't have _id field: {task}")
 
             # Immediately put in pending queue

setup.py

@@ -2,7 +2,7 @@ from setuptools import setup
 
 setup(
     name="hexlib",
-    version="1.71",
+    version="1.72",
     description="Misc utility methods",
     author="simon987",
     author_email="me@simon987.net",