Tntsearch pluging : Argument 1 passed to DOMNode::replaceChild() must be an instance of DOMNode, null given

Support Plugins
1

Hello,

When trying to index pages in the tntsearch pluging I have the following error
Argument 1 passed to DOMNode::replaceChild() must be an instance of DOMNode, null given.

Any idea how to resolve this ?

Thx !