diff --git a/magic_pdf/libs/commons.py b/magic_pdf/libs/commons.py
index b3e8e7ab..21677535 100644
--- a/magic_pdf/libs/commons.py
+++ b/magic_pdf/libs/commons.py
@@ -16,7 +16,8 @@ def get_delta_time(input_time):
 
 
 def join_path(*args):
-    return '/'.join(s.rstrip('/') for s in args)
+    return '/'.join(str(s).rstrip('/') for s in args)
+
 
 #配置全局的errlog_path，方便demo同步引用
 error_log_path = "s3://llm-pdf-text/err_logs/"