Fix FileProvider unable to resolve cacheDir paths

app/src/main/res/xml/cache_paths.xml

@@ -1,5 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <paths>
+    <cache-path
+        name="cache"
+        path="/" />
     <external-files-path
         name="external_files"
         path="/" />