**Originated From:** [https://products.aspose.app/slides/merger/ppt-to-ppt/navigation/uploaded/uploaded/uploaded/uploaded/errorReportForm/uploaded/errorReportForm](https://products.aspose.app/slides/merger/ppt-to-ppt/navigation/uploaded/uploaded/uploaded/uploaded/errorReportForm/uploaded/errorReportForm)
**Exception:** Invalid file, please ensure that uploading correct file
{"IsSuccess":false,"idError":"InvalidFile","Message":"Unknown file format."} undefined
files.zip (22 Bytes)
We couldn’t reproduce this issue using sample files. Please have a look at these files.zip (101.0 KB). Can you please share the problematic Slides?