diff --git a/telethon/client/users.py b/telethon/client/users.py
index c7740f9e..2120fde2 100644
--- a/telethon/client/users.py
+++ b/telethon/client/users.py
@@ -52,7 +52,7 @@ class UserMethods(TelegramBaseClient):
                         exceptions.append(None)
                         results.append(result)
                         request_index += 1
-                    if exceptions:
+                    if any(x is not None for x in exceptions):
                         raise MultiError(exceptions, results, requests)
                     else:
                         return results
diff --git a/telethon/errors/common.py b/telethon/errors/common.py
index b81caecc..9af19c9f 100644
--- a/telethon/errors/common.py
+++ b/telethon/errors/common.py
@@ -78,13 +78,13 @@ class MultiError(Exception):
             raise ValueError(
                 'Need result, exception and request for each error')
         for e, req in zip(exceptions, requests):
-            if not isinstance(e, BaseException):
+            if not isinstance(e, BaseException) and e is not None:
                 raise TypeError(
-                    'Expected and exception object, not %r' % e
+                    "Expected an exception object, not '%r'" % e
                 )
             if not isinstance(req, TLRequest):
                 raise TypeError(
-                    'Expected TLRequest object, not %r' % req
+                    "Expected TLRequest object, not '%r'" % req
                 )
 
         if len(exceptions) == 1: