diff --git a/telethon_generator/data/errors.csv b/telethon_generator/data/errors.csv
index 374362bc..a6c7514d 100644
--- a/telethon_generator/data/errors.csv
+++ b/telethon_generator/data/errors.csv
@@ -67,6 +67,7 @@ CHANNELS_ADMIN_LOCATED_TOO_MUCH,400,The user has reached the limit of public geo
 CHANNELS_ADMIN_PUBLIC_TOO_MUCH,400,"You're admin of too many public channels, make some channels private to change the username of this channel"
 CHANNELS_TOO_MUCH,400,You have joined too many channels/supergroups
 CHANNEL_BANNED,400,The channel is banned
+CHANNEL_FORUM_MISSING,400,
 CHANNEL_ID_INVALID,400,The specified supergroup ID is invalid
 CHANNEL_INVALID,400,"Invalid channel object. Make sure to pass the right types, for instance making sure that the request is designed for channels or otherwise look for a different one more suited"
 CHANNEL_PARICIPANT_MISSING,400,The current user is not in the channel
@@ -81,6 +82,7 @@ CHAT_ADMIN_REQUIRED,400 403,"Chat admin privileges are required to do that in th
 CHAT_DISCUSSION_UNALLOWED,400,
 CHAT_FORBIDDEN,403,You cannot write in this chat
 CHAT_FORWARDS_RESTRICTED,400 406,You can't forward messages from a protected chat
+CHAT_GET_FAILED,500,
 CHAT_GUEST_SEND_FORBIDDEN,403,"You join the discussion group before commenting, see [here](/api/discussion#requiring-users-to-join-the-group) for more info"
 CHAT_ID_EMPTY,400,The provided chat ID is empty
 CHAT_ID_GENERATE_FAILED,500,Failure while generating the chat ID