No data in Explorer tab after install Yang

[ghislia61]

Hi ,
I'm new in programing.
After install Yang Explorer 0.8.0(Beta) , I'm unable to subscribe ietf-interfaces model . And also , there is nothing display at the left when connecting to http://localhost:8088/static/YangExplorer.html.
When I check the git bash CLI , this is the error I have :

INFO:explorer.utils.admin:ModuleAdmin.admin_action: enter (guest -> subscribe)
ERROR:explorer.utils.admin:is_browsable: Exception in parse -> data\users\guest\cxml\[email protected]

Thank you for your help.