Hi @karthiaru ,
I think the rosject environment is lacking the installation of rqt_tf_tree package.
Your error clearly explains that when the output says: Package 'xyz' not found.
Run the following commands to install the package:
cd ~
sudo apt update
sudo apt install ros-<distro>-rqt-tf-tree # distro=humble [in your case]
ros-<distro>-rqt-tf-tree depends on ros-<distro>-rqt-gui package to also be installed.
In case rqt_tf_tree does not start, then you may have to install rqt_gui package also.
In that case, also install rqt_gui package:
cd ~
sudo apt update
sudo apt install ros-<distro>-rqt-gui
sudo apt install ros-<distro>-rqt-gui-cpp ros-<distro>-rqt-gui-py
This should fix your problem.
Regards,
Girish