Caja problem: "unknown" in Date Modified for all files

Hello! I have a problem with Caja. The Date Modified information in List View for all files is "unknown".

When I opened a folder's properties, the Volume, Modified, Created, and Free Space information is also unknown. When I opened a file's properties, the Volume, Accessed, Modified, and Created information is also unknown.

Could anyone help me to solve this problem? I can see date information using ls command from terminal.

Thank you very much.