Why won't dropbox start on ubuntu 16.04?

Question

linux

dropbox start
Starting Dropbox...Traceback (most recent call last):
  File "/usr/bin/dropbox", line 1535, in <module>
    ret = main(sys.argv)
  File "/usr/bin/dropbox", line 1524, in main
    result = commands[argv[i]](argv[i+1:])
  File "/usr/bin/dropbox", line 1395, in start
    if not start_dropbox():
  File "/usr/bin/dropbox", line 732, in start_dropbox
    stderr=sys.stderr, stdout=f, close_fds=True)
  File "/usr/lib/python2.7/subprocess.py", line 711, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1343, in _execute_child
    raise child_exception
OSError: [Errno 8] Exec format error

Answer 1

systemctl status dropbox output:

Answer 2

Delete configs and reinstall service

$rm -rf ~/.dropbox-dist
$rm -rf ~/.dropbox
$dropbox start -i