Unable to build QtNetworkauth add-on with conan

Description
Install Qt6.1.0 beta2, Cmake, Ninja and Conan with online installer. enterprise
 
Run build command:
conan install qtnetworkauth/6.1.0@qt/beta2 --build=missing --profile=/home/qt/RTA/qt5/Tools/Conan/profiles/qt-6.1.0-gcc-x86_64 -s build_type=Release -g cmake_paths -g cmake -g deploy
 
Build error:
 
CONAN_CMAKE_GENERATOR=Ninja
QTDIR=/home/qt/RTA/qt5/6.1.0/gcc_64
ERROR: Recipe not found: 'qtnetworkauth/6.1.0@qt/beta2'
['*** You can change them in /home/qt/.conan/profiles/default **', "** Or override with -s compiler='other' -s ...s***", '', '', 'Configuration:', '[settings]', 'arch=x86_64', 'build_type=Release', 'compiler=gcc', 'compiler.libcxx=libstdc++11', 'compiler.version=7.5', 'os=Linux', '[options]', 'qt6=6.1.0', '[build_requires]', '[env]', 'CONAN_CMAKE_GENERATOR=Ninja', 'QTDIR=/home/qt/RTA/qt5/6.1.0/gcc_64', "ERROR: Recipe not found: 'qtnetworkauth/6.1.0@qt/beta2'", '']
 You can change them in /home/qt/.conan/profiles/default **Or override with -s compiler='other' -s ...s**
 
Configuration:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=7.5
os=Linux
[options]
qt6=6.1.0
[build_requires]
[env]
CONAN_CMAKE_GENERATOR=Ninja
QTDIR=/home/qt/RTA/qt5/6.1.0/gcc_64
ERROR: Recipe not found: 'qtnetworkauth/6.1.0@qt/beta2'