diff --git a/autoload/SpaceVim/plugins/a.vim b/autoload/SpaceVim/plugins/a.vim
index 5091d2790..98b751447 100644
--- a/autoload/SpaceVim/plugins/a.vim
+++ b/autoload/SpaceVim/plugins/a.vim
@@ -68,7 +68,7 @@ else
   " saving cache
 
   function! s:cache() abort
-    call writefile([s:JSON.json_encode(s:project_config)], s:FILE.unify_path(s:cache_path, ':p'))
+    silent call writefile([s:JSON.json_encode(s:project_config)], s:FILE.unify_path(s:cache_path, ':p'))
   endfunction
 
   function! s:load_cache() abort
diff --git a/lua/spacevim/plugin/a.lua b/lua/spacevim/plugin/a.lua
index 34cc0a025..f72681ddc 100644
--- a/lua/spacevim/plugin/a.lua
+++ b/lua/spacevim/plugin/a.lua
@@ -27,11 +27,11 @@ local project_config = {}
 
 local function cache()
     logger.debug('write cache into file:' .. cache_path)
-    local rst = fn.writefile({sp_json.json_encode(project_config)}, cache_path)
-    if rst == 0 then
-        logger.debug('cache succeeded!')
-    else
+    local ok, errors = pcall(fn.writefile, {sp_json.json_encode(project_config)}, cache_path)
+    if not ok then
         logger.debug('cache failed!')
+    else
+        logger.debug('cache succeeded!')
     end
 end