Welcome, @Elie_Dahdouh
This tool wasn’t designed to accept user supplied indexes from the history. The server needs to add in indexes instead.
We have a prior topic with some details here → Krocus database missing
In short, the tool is not supported at the public servers (yet, and may never be).
Instead, please consider using the alternative that is supported.
- MLST Scans genomes against PubMLST schemes (link at EU)
- MLST List Lists available schemes for the MLST tool (link at EU)
Hope this helps! 