In the browser I cannot see the folders and information, the page remains blank

When I enter the nextcloud browser and go to the folders where the information is, it stays blank but I do try to search for a file if it finds it and it lets me view it. I had a power outage and the computer where the server is was turned off, so what can I check so that I can view the folders again, since everything only loads those types of icons, no. I already restarted the computer. ubuntu server

The page is blank, the folder icons do not appear.