fix bug

gato/enumerate/repository.py

@@ -87,8 +87,10 @@ def __check_callees(self, parsed_yml, repository: Repository, env_rules):
                     callee_wf = CacheManager().get_workflow(repository.name, callee)
                     if not callee_wf:
                         callee_wf = self.api.retrieve_workflow_yml(repository.name, callee)
-                    callee_wf = WorkflowParser(callee_wf.workflow_contents, repository.name, callee)
-                    self.temp_wf_cache.update({callee_wf.wf_name : callee_wf})
+
+                    if callee_wf:
+                        callee_wf = WorkflowParser(callee_wf.workflow_contents, repository.name, callee)
+                        self.temp_wf_cache.update({callee_wf.wf_name : callee_wf})
 
                 if callee_wf:
                     sub_injection = callee_wf.check_injection(bypass=True)
@@ -114,6 +116,7 @@ def __perform_yml_enumeration(self, repository: Repository):
             list: List of workflows that execute on sh runner, empty otherwise.
         """
         runner_wfs = []
+        self.temp_wf_cache.clear()
 
         if  CacheManager().is_repo_cached(repository.name):
             ymls = CacheManager().get_workflows(repository.name)