diff --git a/checkov/yaml_doc/runner.py b/checkov/yaml_doc/runner.py
index 0aca8268c57..a556f01f103 100644
--- a/checkov/yaml_doc/runner.py
+++ b/checkov/yaml_doc/runner.py
@@ -69,7 +69,7 @@ def resolve_sub_name(definition: dict[str, Any], start_line: int, end_line: int,
         if not definition:
             return ""
         for key, sub_name in definition.get(tag, {}).items():
-            if key in (START_LINE, END_LINE):
+            if key in (START_LINE, END_LINE) or not isinstance(sub_name, dict):
                 continue
             if sub_name[START_LINE] <= start_line <= end_line <= sub_name[END_LINE]:
                 return str(key)
diff --git a/tests/circleci_pipelines/resources/.circleci/config.yml b/tests/circleci_pipelines/resources/.circleci/config.yml
index b8e4da7ab9c..2c1f61137ab 100644
--- a/tests/circleci_pipelines/resources/.circleci/config.yml
+++ b/tests/circleci_pipelines/resources/.circleci/config.yml
@@ -1,5 +1,5 @@
---- 
-orbs: 
+---
+orbs:
   new-orb: "whatever/orbname@goodorb"
   some-orb: "orbs/orbname@dev:blah"
 
@@ -9,6 +9,9 @@ executors:
       - "image": "mongo:2.6.8"
 
 jobs:
+  test-job-single-line: say-hello-workflow/script
+  test-job-list-line:
+    - checkout
   test-docker-hash-img:
     docker:
       -
@@ -92,9 +95,9 @@ jobs:
           name: "Echo the PR Reponame"
 
 version: 2.1
-workflows: 
-  say-hello-workflow: 
-    jobs: 
+workflows:
+  say-hello-workflow:
+    jobs:
       - test-docker-hash-img
       - test-docker-latest-img
       - test-docker-versioned-img
diff --git a/tests/github/resources/github_conf/empty_collabs/repository_collaborators.json b/tests/github/resources/github_conf/empty_collabs/repository_collaborators.json
new file mode 100644
index 00000000000..0637a088a01
--- /dev/null
+++ b/tests/github/resources/github_conf/empty_collabs/repository_collaborators.json
@@ -0,0 +1 @@
+[]
\ No newline at end of file