diff --git a/alibot_helpers/github_utilities.py b/alibot_helpers/github_utilities.py
index bded9d83..6124f74e 100644
--- a/alibot_helpers/github_utilities.py
+++ b/alibot_helpers/github_utilities.py
@@ -251,6 +251,8 @@ def post(self, url, data, stable_api=True, **kwds):
         data = json.dumps(data) if type(data) == dict else data
         response = requests.post(url=url, data=data, headers=headers)
         sc = response.status_code
+        if sc == 422:
+            print(f"GitHub error: Unprocessable Entity", file=sys.stderr)
         return sc
 
     @trace
diff --git a/report-pr-errors b/report-pr-errors
index 37538105..c356ffb8 100755
--- a/report-pr-errors
+++ b/report-pr-errors
@@ -467,7 +467,7 @@ def get_pending_namespace(args):
                      url="")
 
 
-def handle_branch(cgh, pr, logs, args):
+def handle_branch(cgh: GithubCachedClient, pr, logs, args):
     ns = get_pending_namespace(args) if args.pending else \
         Namespace(commit=args.pr,
                   status=args.status + "/error",
@@ -477,7 +477,7 @@ def handle_branch(cgh, pr, logs, args):
     sys.exit(0)
 
 
-def handle_pr_id(cgh, pr, logs, args):
+def handle_pr_id(cgh: GithubCachedClient, pr, logs, args):
     commit = cgh.get("/repos/{repo_name}/commits/{ref}",
                      repo_name=pr.repo_name,
                      ref=pr.commit)