Same issue. Fixed by change line
set SDKMANAGER=%STUDIO_SDK_PATH%\tools\bin\sdkmanager.bat
to
set SDKMANAGER=C:\Users\USER_NAME\AppData\Local\Android\Sdk\cmdline-tools\latest\bin\sdkmanager.bat
USER_NAME - is your name
Same issue. Fixed by change line
set SDKMANAGER=%STUDIO_SDK_PATH%\tools\bin\sdkmanager.bat
to
set SDKMANAGER=C:\Users\USER_NAME\AppData\Local\Android\Sdk\cmdline-tools\latest\bin\sdkmanager.bat
USER_NAME - is your name