Openhab designer get error

Openhab designer cannot any file?? Please help me

Which version of eclipse smarthome designer are you using?

Can you confirm you have access to the share folder where the files are located? can you navigate and open them in text editor?

I used distribution-1.8.3-designer-linux64bit.

Yes, I can access and open them in other text editor. But I cannot open it by Openhab designer. As you saw, Icons on the left menu in interface of Openhab designer are not shown

I am missing the open button in your screenshot…

Maybe a dump question… but what happens if you resize the configurations pane, will the open button appear?

I just tested and not successly