MAFFT crashes when submitted an empty sequence.

[warownia1]

Error output

/bin/mafft: line 1199: /dev/stderr: Not a directory
/bin/mafft: line 1203: [: too many arguments
/bin/mafft: line 1208: [: too many arguments
/bin/mafft: line 1213: [: too many arguments
/bin/mafft: line 1218: [: -lt: unary operator expected
/bin/mafft: line 1223: [: -lt: unary operator expected
/bin/mafft: line 1230: [: -lt: unary operator expected
/bin/mafft: line 1237: [: -lt: unary operator expected
/bin/mafft: line 2543: /dev/stderr: Not a directory