you have to check the file <LS-INSTALL-DIR>/LibreSource/ls-config.properties. (for your installation, it seems to be "G:\LibreSource") This file contains two lines with paths :
kernel.indexation.data.dir=<path>
libresource.distributedFilesystem=<path>
The two <path> must be correct and depend of your system. For windows, set to G:\\LibreSource\\work\files
and G:\\LibreSource\\work\index
Then, run <LS-INSTALL-DIR>/config.bat script. And restart LibreSource.