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Navigationtree in ZMI is not working. #179

sallner opened this Issue Sep 15, 2017 · 0 comments


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2 participants

sallner commented Sep 15, 2017

When attempting to expand a folder with content in the TreeDisplay on the left-hand side of the ZMI, we get the following error under Python 3.

Traceback (most recent call last):
  File "/home/sallner/dev/eggs/waitress-1.0.2-py3.5.egg/waitress/", line 338, in service
  File "/home/sallner/dev/eggs/waitress-1.0.2-py3.5.egg/waitress/", line 169, in service
  File "/home/sallner/dev/eggs/waitress-1.0.2-py3.5.egg/waitress/", line 399, in execute
    app_iter =, start_response)
  File "/home/sallner/zope/Zope/src/ZPublisher/", line 33, in __call__
    return self.application(environ, start_response)
  File "/home/sallner/zope/Zope/src/ZPublisher/", line 248, in publish_module
    response = _publish(request, new_mod_info)
  File "/home/sallner/zope/Zope/src/ZPublisher/", line 204, in publish
  File "/home/sallner/zope/Zope/src/ZPublisher/", line 85, in mapply
    return debug(object, args, context)
  File "/home/sallner/zope/Zope/src/ZPublisher/", line 56, in call_object
    return obj(*args)
  File "/home/sallner/zope/Zope/src/Shared/DC/Scripts/", line 323, in __call__
    return self._bindAndExec(args, kw, None)
  File "/home/sallner/zope/Zope/src/Shared/DC/Scripts/", line 360, in _bindAndExec
    return self._exec(bound_data, args, kw)
  File "/home/sallner/zope/Zope/src/App/", line 203, in _exec
    result = render_blocks(self._v_blocks, ns)
  File "/home/sallner/dev/eggs/DocumentTemplate-3.0a4-py3.5.egg/DocumentTemplate/", line 147, in render_blocks
    render_blocks_(blocks, rendered, md)
  File "/home/sallner/dev/eggs/DocumentTemplate-3.0a4-py3.5.egg/DocumentTemplate/", line 248, in render_blocks_
    block = block(md)
  File "/home/sallner/dev/eggs/DocumentTemplate-3.0a4-py3.5.egg/TreeDisplay/", line 115, in render
    return tpRender(v, md, self.section, self.args)
  File "/home/sallner/dev/eggs/DocumentTemplate-3.0a4-py3.5.egg/TreeDisplay/", line 215, in tpRender
    diff = decode_seq(md['tree-e'])
  File "/home/sallner/dev/eggs/DocumentTemplate-3.0a4-py3.5.egg/TreeDisplay/", line 667, in decode_seq
    state = decompress(state)
  File "/home/sallner/dev/eggs/DocumentTemplate-3.0a4-py3.5.egg/TreeDisplay/", line 693, in decompress
    return zlib.decompress(input).decode('utf-8')
zlib.error: Error -3 while decompressing data: incorrect header check

To reproduce:

  • Create folder Test
  • Inside Test create a folder Subtest
  • Reload the ZMI, as the TreeDisplay may not be automatically updated
  • Click on the + in front of Test

@sallner sallner added the bug label Sep 15, 2017

@sallner sallner added this to the 4.0b1 milestone Sep 15, 2017

@icemac icemac modified the milestones: 4.0b1, 4.0b2 Sep 20, 2017

@icemac icemac modified the milestones: 4.0b2, 4.0b3 Oct 13, 2017

@dataflake dataflake closed this in ff1ccda Nov 3, 2017

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