Error when loading Blast track in JBrowse (Doing the tutorial)

I am doing the Genomic Data Visualisation with JBrowse tutorial on usegalaxy.eu.

When doing the last part “Blast results” I get an error message when trying to visualise the swissprot track.

“An error was encountered when displaying this track”
“Diagnostic message: error: Too much data. Chunk size 1.204.985 bytes exceeds chunkSizeLimit of 1.000.000”

Why is this happening, when I follow the steps in the tutorial? What can I do?