map of pGY694 is not displayed: 500 error.

Something very strange happens for this plasmid: the read view returns a 500 error. This is due to an empty output of blast on dna_features. If, in app/Http/Controllers/lib/Seq.php I change

   $cmd_blast = "blastn -query "

by

   $cmd_blast = "blastn -task blastn -query "

then the map is produced in the read view. However, I then see that maps of many plasmids aren't nice anymore, with lots of small pieces.

Typing blastn -help in terminal says that blastn calls the task megablast by default.