ERROR Executing frappe.patches.v6_15.set_username in site1.local


I;ve just run bench update and got this error:

frappe.exceptions.ValidationError: username field cannot be set as unique in tabUser, as there are non-unique existing values
Traceback (most recent call last):
  File "/usr/local/bin/bench", line 9, in <module>
    load_entry_point('bench==0.1', 'console_scripts', 'bench')()
  File "/home/vef/bench-repo/bench/", line 60, in cli
  File "/usr/local/lib/python2.7/dist-packages/click/", line 664, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/click/", line 644, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python2.7/dist-packages/click/", line 991, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python2.7/dist-packages/click/", line 837, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python2.7/dist-packages/click/", line 464, in invoke
    return callback(*args, **kwargs)
  File "/home/vef/bench-repo/bench/", line 241, in _update
    update(pull, patch, build, bench, auto, restart_supervisor, requirements, no_backup, upgrade, force=force)
  File "/home/vef/bench-repo/bench/", line 270, in update
  File "/home/vef/bench-repo/bench/", line 161, in patch_sites
    run_frappe_cmd('--site', 'all', 'migrate', bench=bench)
  File "/home/vef/bench-repo/bench/", line 496, in run_frappe_cmd
    raise CommandFailedError(args)
bench.utils.CommandFailedError: ('--site', 'all', 'migrate')

Did you already have a field called username?

Yes username does exist in tabUser but I think it’s not a custom field…it’s from frappe