XCOS STM32 toolbox facing atomsLoad

atomsLoad: The file ‘C:\Users\Gayathri\AppData\Roaming\Scilab\scilab-5.5.2\atoms\x64\xcos_stm32_toolbox\1.1\loader.sce’ from (xcos_stm32_toolbox - 1.1) does not exist or is not read accessible. Why the above error occurs after I installed xcos STM32 toolbox in xcos folder from Module Manger - ATOMS of scilab.