A couple things from quick review

src/palace/manager/api/controller/loan.py

@@ -17,7 +17,6 @@
 )
 from palace.manager.api.problem_details import (
     BAD_DELIVERY_MECHANISM,
-    CANNOT_FULFILL,
     CANNOT_RELEASE_HOLD,
     HOLD_FAILED,
     NO_ACTIVE_LOAN,
@@ -361,17 +360,9 @@ def fulfill(
         except (CirculationException, RemoteInitiatedServerError) as e:
             return e.problem_detail
 
-        if mechanism.delivery_mechanism.is_streaming:
-            if not isinstance(fulfillment, UrlFulfillment):
-                self.log.error(
-                    "Fulfillment for streaming mechanism %r is not a URL: %r",
-                    mechanism.delivery_mechanism,
-                    fulfillment,
-                )
-                return CANNOT_FULFILL.with_debug(
-                    "Incorrect fulfillment type: %r" % fulfillment
-                )
-
+        if mechanism.delivery_mechanism.is_streaming and isinstance(
+            fulfillment, UrlFulfillment
+        ):
             # If this is a streaming delivery mechanism, create an OPDS entry
             # with a fulfillment link to the streaming reader url.
             feed = OPDSAcquisitionFeed.single_entry_loans_feed(

src/palace/manager/util/http.py

@@ -4,7 +4,7 @@
 import time
 from collections.abc import Callable, Mapping, Sequence
 from json import JSONDecodeError
-from typing import TYPE_CHECKING, Any
+from typing import Any
 from urllib.parse import urlparse
 
 import requests
@@ -28,9 +28,6 @@
     ProblemDetailException,
 )
 
-if TYPE_CHECKING:
-    pass
-
 
 class RemoteIntegrationException(IntegrationException, BaseProblemDetailException):
     """An exception that happens when we try and fail to communicate