Facebook Group Chat Error?

I have created a group for my relatives in facebook last year,  We already 348 members on the group.

We enjoy chatting using the group chat support in facebook. But we are 230 members at that time,  until we reached at 250 members,  the group chat is not functioning.  I don’t know if facebook has an error.

I think the facebook is limiting the chat at 249 members.

If you have encounter same problem and you solve . Please have a comment below.

Hope facebook will make  unlimited members at the group.

Thank you for reading this post.