[galaxy-dev] Errno 13 when trying to visualize Bowtie2 data

Hi, since few days, when trying to visualize my Bowtie2 data on IGV or UCSC, I get this error message : There was a conflict when trying to complete your request. Error generating display_link: [Errno 13] Permission denied: '/galaxy-repl/main/files/_metadata_files/000' Any idea how to solve this? Thank you for your help. Best, Federico