This appears to be related to a server-side problem that was resolved about an hour ago. Please rerun this job and any others that failed over the last two days.
Should the rerun fail, the error message will likely be different. Double-checking your inputs is how to start troubleshooting. Maybe uncompress, then use that as an input? Galaxy Support - Galaxy Community Hub >> Extended Help for Differential Expression Analysis Tools
Thank you for reporting the problem and our apologies for the confusion.