diff --git a/doc/README/README.md b/doc/README/README.md
index d9eaad3..671674a 100644
--- a/doc/README/README.md
+++ b/doc/README/README.md
@@ -250,4 +250,11 @@ TODO:
 ```
 TODO:
     单片机层添加急停指令，同时添加急停错误。
+```
+
+```angular2html
+
+查看服务的日志
+journalctl -u zapp.service -n 100
+
 ```
\ No newline at end of file
diff --git a/src/main/java/a8k/app/service/data/FileMgrService.java b/src/main/java/a8k/app/service/data/FileMgrService.java
index cac2413..1f298d1 100644
--- a/src/main/java/a8k/app/service/data/FileMgrService.java
+++ b/src/main/java/a8k/app/service/data/FileMgrService.java
@@ -40,7 +40,7 @@ public class FileMgrService {
 	public List<String> getOptReportList() {
 		File dir = new File(FilePathConstant.FILE_OPT_REPORT_PATH);
 		if (!dir.exists()) {
-			dir.mkdir();
+			dir.mkdirs();
 		}
 		return Arrays.asList(Objects.requireNonNull(dir.list()));
 	}