content publish failed

upon this command:

Page.cmd("fileWrite", [inner_path, btoa(json_raw)], function(res) {
console.log(res);
Page.cmd("sitePublish",{"inner_path":inner_path,"sign":false}, function(res) {
console.log(res);
$scope.$apply(function() {
Page.cmd("wrapperNotification", ["done", "Comment posted!", 10000]);
$scope.comments.push(comment);
});
});
});

im getting this console error - content publish failed

terminal log:
`[13:11:12] - Unhandled exception
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/gevent/greenlet.py", line 327, in run
result = self._run(*self.args, **self.kwargs)
File "src/Site/Site.py", line 425, in publish
inner_path, limit, len(self.peers), num_connected_peers, diffs.keys(), float(len(str(diffs))) / 1024
AttributeError: 'NoneType' object has no attribute 'keys'
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/gevent/greenlet.py", line 327, in run
result = self._run(*self.args, **self.kwargs)
File "src/Site/Site.py", line 425, in publish
inner_path, limit, len(self.peers), num_connected_peers, diffs.keys(), float(len(str(diffs))) / 1024
AttributeError: 'NoneType' object has no attribute 'keys'
`

Start with the publish method in src/Site/Site.py around line 425 and trace how diffs is produced for the fileWrite/sitePublish sequence shown in the issue. Reproduce the command sequence, inspect the publish traceback, and consider the issue done when publishing no longer fails with the NoneType keys error and the existing comment-posting flow completes.

由索引模型根据 Issue 内容生成。