There is an issue already related to this: #65702, #67402 also contains a comment with the error.
This error does not appear in the Godot own code, so as the first one outline, this comes from a third party library used, so there is a very huge probability you can't do anything about it, check the comments on the first issue, you may eventually try another version of the library which create the issue (if it's actually one and not an harmless warning) and/or report an issue to this library repository if there is not already one or more.