Check that webfinger returns a dict

announce.py

@@ -374,6 +374,10 @@ def sendAnnounceViaServer(baseDir: str, session,
         if debug:
             print('DEBUG: announce webfinger failed for ' + handle)
         return 1
+    if not isinstance(wfRequest, dict):
+        print('WARN: Webfinger for ' + handle + ' did not return a dict. ' +
+              str(wfRequest))
+        return 1
 
     postToBox = 'outbox'