Some of the hosted journals names not displaying on OJS

I am using OJS version. Suddenly day before yesterday some of the hosted Journals names which were already working fine, stopped displaying their names on OJS. Although their data and archives have not lost and showing on the website. I am also trying to rename the journals through hosted journals>edit>journals title but it also not working. Though I am able to create new journals but not able to rename those journals.
Please find attached
Please suggest what went wrong. Pls Help.