I follow the steps which provided below url with out doing any other code changes and build the project.
I imported Tobii Ocumen latest packages using unity package manager and drag the license file at License Asset field in tobii initializer prefab
Iam getting below exceptions when I use the same.
1)Object reference not set to an instance of an object.when try to use TobiiXR.Advanced.LatestData
2)An attempt was made to access TobiiXR Advanced without having initialized it