diff --git a/exasol/ds/sandbox/runtime/ansible/roles/entrypoint/files/entrypoint.py b/exasol/ds/sandbox/runtime/ansible/roles/entrypoint/files/entrypoint.py
index 3785f881..5018a438 100644
--- a/exasol/ds/sandbox/runtime/ansible/roles/entrypoint/files/entrypoint.py
+++ b/exasol/ds/sandbox/runtime/ansible/roles/entrypoint/files/entrypoint.py
@@ -212,7 +212,7 @@ def group_id(self) -> int:
         return self.stat.st_gid
 
     def is_group_accessible(self) -> bool:
-        if not os.path.isfile(self.path):
+        if not os.path.exists(self.path):
             _logger.debug(f"No file {self.path}")
             return False
         permissions = stat.filemode(self.stat.st_mode)
diff --git a/test/notebook_test_runner/test_notebooks_in_dss_docker_image.py b/test/notebook_test_runner/test_notebooks_in_dss_docker_image.py
index cd93fb75..fb9f3e99 100644
--- a/test/notebook_test_runner/test_notebooks_in_dss_docker_image.py
+++ b/test/notebook_test_runner/test_notebooks_in_dss_docker_image.py
@@ -63,8 +63,8 @@ def notebook_test_container_with_log(notebook_test_container):
     print(socket)
     print(socket.stat())
     print()
-    print("Container Logs:")
-    print(notebook_test_container.logs().decode("utf-8"), flush=True)
+    logs = notebook_test_container.logs().decode("utf-8").strip()
+    print("Container Logs: {logs or '(empty)'}", flush=True)
     yield notebook_test_container