Hey @Makhnyk Ihor — welcome to the Figma Forum, and thanks for flagging this! I’ve checked in, and our engineering team is actively investigating similar reports around this issue.
We’ll share updates here as soon as more information becomes available. Really appreciate your patience while they dig in. 
Hi @Makhnyk Ihor — our engineering team has resolved the issue causing this error. 
When you have a moment, please refresh your tab and try again.
Thanks for flagging this and for your patience while we worked on the fix. Let us know if anything else comes up!
Hi @Tom Reem,
the issue occurs for me with xlsx-Files with an image. The CSV file (without images) works but I need the images as well. It happens with an older file which I used recently, too.
Hi, @Tom Reem
The issue is still occurs for me with xlsx-Files with an image.