File "/usr/oe/openembedded/packages/dropbear/dropbear_0.47.bb:base_do_fetch", line 26, in ?
  File "/usr/oe/openembedded/packages/dropbear/dropbear_0.47.bb:base_do_fetch", line 18, in base_do_fetch
  File "/usr/oe/bitbake/lib/bb/fetch/__init__.py", line 94, in go
    m.go(d)
  File "/usr/oe/bitbake/lib/bb/fetch/wget.py", line 149, in go
    if fetch_uri(uri, basename, dl, md5, parm, localdata):
  File "/usr/oe/bitbake/lib/bb/fetch/wget.py", line 79, in fetch_uri
    wanted_md5sum = md5_sum(parm, d)
  File "/usr/oe/bitbake/lib/bb/fetch/wget.py", line 66, in md5_sum
    return parm['md5sum']
KeyError: 'md5sum'