nutch entered FATAL state, too many start retries too quickly

[kherox]

Hello everyone,
after run supervisord, i have this error

2016-09-04 19:12:10,757 INFO exited: nutch (exit status 127; not expected)
2016-09-04 19:12:12,798 INFO spawned: 'nutch' with pid 2168
2016-09-04 19:12:12,890 INFO exited: nutch (exit status 127; not expected)
2016-09-04 19:12:16,201 INFO spawned: 'nutch' with pid 2211
2016-09-04 19:12:16,252 INFO exited: nutch (exit status 127; not expected)
2016-09-04 19:12:16,252 INFO gave up: nutch entered FATAL state, too many start retries too quickly
Environnement :
Ubuntu 16.04