lock mmcls version (open-mmlab#131)

RunningLeon · web-flow · commit cce81d3ce01f · 2022-02-08T19:33:48.000+08:00
diff --git a/requirements/optional.txt b/requirements/optional.txt
@@ -1,4 +1,4 @@
-mmcls>=0.15.0
+mmcls>=0.15.0,<=0.19.0
 mmdet>=2.19.0
 mmedit
 mmocr==0.3.0
