diff --git a/sharex_server.py b/sharex_server.py
index 77615f4..d6e26d9 100644
--- a/sharex_server.py
+++ b/sharex_server.py
@@ -69,7 +69,7 @@ async def handle_upload(req, acc, acc_db):
         if h not in acc_db:
             break
     else:
-        return web.Response(text='server full', status=500)
+        return web.Response(text='url key-space full', status=500)
 
     acc_db[h] = filename
     local_fname = f'{conf.data_path}/{acc}/{h}_{filename}'
@@ -134,6 +134,17 @@ async def handle_download(req, acc, acc_db):
 
 
 def main():
+    if conf.url_hash_len > 31:
+        raise ValueError('url_hash_len can\'t be bigger than 31')
+    if not set(conf.max_filesize.replace(' ', ''))\
+            .issubset(valid_hash_chars | {'*'}):
+        raise ValueError('max_filesize only can contain numbers and *')
+    conf.max_filesize = eval(conf.max_filesize)
+    conf.auth_tokens = set(conf.tokens)
+    conf.prefix = conf.prefix.strip("/")
+    if conf.prefix:
+        conf.prefix = f'/{conf.prefix}'
+    conf.del_crypt_key = hashlib.md5(conf.del_crypt_key.encode()).digest()[:16]
     if not os.path.isdir(conf.data_path):
         os.mkdir(conf.data_path)
     for acc in os.listdir(conf.data_path):
@@ -157,16 +168,5 @@ if __name__ == '__main__':
     file_db = defaultdict(dict)
     confname = sys.argv[1] if sys.argv[1:] and os.path.isfile(sys.argv[1]) else 'config.yaml'
     with open(confname) as cf:
-        conf = AttrDict.from_dict_recur(yaml.load(cf))
-    if conf.url_hash_len > 31:
-        raise ValueError('url_hash_len can\'t be bigger than 31')
-    if not set(conf.max_filesize.replace(' ', ''))\
-            .issubset(valid_hash_chars | {'*'}):
-        raise ValueError('max_filsize only can contain numbers and *')
-    conf.max_filesize = eval(conf.max_filesize)
-    conf.auth_tokens = set(conf.tokens)
-    conf.prefix = conf.prefix.strip("/")
-    if conf.prefix:
-        conf.prefix = f'/{conf.prefix}'
-    conf.del_crypt_key = hashlib.md5(conf.del_crypt_key.encode()).digest()[:16]
+        conf = AttrDict.from_dict_recur(yaml.safe_load(cf))
     main()