Hello, when I install the chatroom plugin of gives me the following message at the top of the page:

OW Debug - Notice

Message:

Undefined index: chat

File:

/home/josete50/domains/d-arness.com/public_html/grupopajillero/ow_plugins/chatrooms/controllers/index.php

Line:

42

OW Debug - Notice

Message:

Undefined offset: 0

File:

/home/josete50/domains/d-arness.com/public_html/grupopajillero/ow_plugins/chatrooms/controllers/index.php

Line:

50

OW Debug - Notice

Message:

Undefined variable: chat

File:

/home/josete50/domains/d-arness.com/public_html/grupopajillero/ow_plugins/chatrooms/controllers/index.php

Line:

293

How I can fix it?

Thanks