我在我的 localhost CKAN 安装（1.8）中成功实现了一个自定义 Harvester，但是当我在另一台（应该是相同的配置）机器上移动时，我收到了这个错误：
2013-02-13 11:18:21,670 DEBUG [ckanext.patstatweb.harvesters] In PatStatWebHarvester fetch_stage
2013-02-13 11:18:21,981 DEBUG [ckanext.patstatweb.harvesters] In PatStatWebHarvester import_stage
2013-02-13 11:18:22,357 INFO [ckanext.harvest.harvesters.base] Package with GUID 9d15e19d1b17ac432dd704542a384304f7a37992 does not exist, let's create it
2013-02-13 11:18:22,384 ERROR [ckanext.harvest.harvesters.base] {' junk': 'The input field __junk was not expected.'}
Traceback (most recent call last):
File "/home/ckan/pyenv/src/ckanext-harvest/ckanext/harvest/harvesters/base.py", line 165, in _create_or_update_package
new_package = get_action('package_create_rest')(context, package_dict)
File "/home/ckan/pyenv/src/ckan/ckan/logic/action/create.py", line 723, in package_create_rest
dictized_after = _get_action('package_create')(context, dictized_package)
File "/home/ckan/pyenv/src/ckan/ckan/logic/action/create.py", line 137, in package_create
raise ValidationError(errors)
ValidationError: {' junk': 'The input field __junk was not expected.'}
2013-02-13 11:18:22,392 ERROR [ckanext.harvest.harvesters.base] Invalid package with GUID 9d15e19d1b17ac432dd704542a384304f7a37992: {'__junk': ['The input field __junk was not expected.']}
对此有何见解？