fix error message on the console on expanding filetree
fix error message on the console on expanding filetree

ResearchComputing/OIDE,ResearchComputing/OIDE,SandstoneHPC/sandstone-ide,SandstoneHPC/OIDE,ResearchComputing/OIDE,SandstoneHPC/OIDE,SandstoneHPC/OIDE,SandstoneHPC/sandstone-ide,ResearchComputing/OIDE,SandstoneHPC/sandstone-ide