在Python2.7下尝试在DjangoCMS3.0中发布某些页面时出现KeyError

Question

在某些页面（而不是所有页面）上过了一会儿，这样的错误就会出现：（请参阅下面的回溯代码片段…）

我试图从另一个用户那里发布一个页面，认为这个问题在某种程度上与用户的偏好有关，但事情是一样的。你知道吗

要回滚页面的历史记录并发布旧版本-也不起作用，版本“在草稿中”似乎要回滚，但发布时却是同样的错误。你知道吗

<div> <div> <div class="adm"> </div> <div class="im"> <h1>KeyError at /ru/admin/cms/page/6154/ru/<wbr>publish/</h1> <pre style="font-size:12pt">221273</pre> <br> <h2>Traceback</h2> </div> </div> <div style="font-size:10pt"> <ul> <div> <div class="adm"> <div id="q_3469" class="ajR h4" data-tooltip="Скрыть развернутую часть" aria-label="Скрыть развернутую часть"> <div class="ajT"></div> </div> </div> <div class="im"> <li> <code>/home/web/{server}/env/local/lib/<wbr>python2.7/site-packages/<wbr>django/core/handlers/base.py</code> in <b><i><code>get_response</code></i></b><br> <div> <ol start="112"> <li> <pre style="margin-top:2px;margin-bottom:4px;background-color:silver"> response = wrapped_callback(request, *callback_args, **callback_kwargs)</pre> </li> </ol> </div> </li> <li> <code>/home/web/{server}/env/local/lib/<wbr>python2.7/site-packages/<wbr>django/utils/decorators.py</code> in <b><i><code>_wrapped_view</code></i></b><br> <div> <ol start="99"> <li> <pre style="margin-top:2px;margin-bottom:4px;background-color:silver"> response = view_func(request, *args, **kwargs)</pre> </li> </ol> </div> </li> <li> <code>/home/web/{server}/env/local/lib/<wbr>python2.7/site-packages/<wbr>django/views/decorators/cache.<wbr>py</code> in <b><i><code>_wrapped_view_func</code></i></b><br> <div> <ol start="52"> <li> <pre style="margin-top:2px;margin-bottom:4px;background-color:silver"> response = view_func(request, *args, **kwargs)</pre> </li> </ol> </div> </li> <li> <code>/home/web/{server}/env/local/lib/<wbr>python2.7/site-packages/<wbr>django/contrib/admin/sites.py</code> in <b><i><code>inner</code></i></b><br> <div> <ol start="198"> <li> <pre style="margin-top:2px;margin-bottom:4px;background-color:silver"> return view(request, *args, **kwargs)</pre> </li> </ol> </div> </li> <li> <code>/home/web/{server}/env/local/lib/<wbr>python2.7/site-packages/<wbr>django/db/transaction.py</code> in <b><i><code>inner</code></i></b><br> <div> <ol start="431"> <li> <pre style="margin-top:2px;margin-bottom:4px;background-color:silver"> return func(*args, **kwargs)</pre> </li> </ol> </div> </li> <li> <code>/home/web/{server}/env/local/lib/<wbr>python2.7/site-packages/<wbr>reversion/revisions.py</code> in <b><i><code>do_revision_context</code></i></b><br> <div> <ol start="300"> <li> <pre style="margin-top:2px;margin-bottom:4px;background-color:silver"> return func(*args, **kwargs)</pre> </li> </ol> </div> </li> <li> <code>/home/web/{server}/env/local/lib/<wbr>python2.7/site-packages/cms/<wbr>admin/pageadmin.py</code> in <b><i><code>publish_page</code></i></b><br> <div> <ol start="1038"> <li> <pre style="margin-top:2px;margin-bottom:4px;background-color:silver"> published = page.publish(language)</pre> </li> </ol> </div> </li> <li> <code>/home/web/{server}/env/local/lib/<wbr>python2.7/site-packages/cms/<wbr>models/pagemodel.py</code> in <b><i><code>publish</code></i></b><br> <div> <ol start="567"> <li> <pre style="margin-top:2px;margin-bottom:4px;background-color:silver"> self._copy_contents(public_<wbr>page, language)</pre> </li> </ol> </div> </li> <li> <code>/home/web/{server}/env/local/lib/<wbr>python2.7/site-packages/cms/<wbr>models/pagemodel.py</code> in <b><i><code>_copy_contents</code></i></b><br> <div> <ol start="266"> <li> <pre style="margin-top:2px;margin-bottom:4px;background-color:silver"> copy_plugins_to(plugins, ph, no_signals=True)</pre> </li> </ol> </div> </li> <li> <code>/home/web/{server}/env/local/lib/<wbr>python2.7/site-packages/cms/<wbr>utils/copy_plugins.py</code> in <b><i><code>copy_plugins_to</code></i></b><br> <div> <ol start="22"> <li> <pre style="margin-top:2px;margin-bottom:4px;background-color:silver"> new_plugin = old_plugin.copy_plugin(to_<wbr>placeholder, plugin_language, old_parent_cache, no_signals=no_signals)</pre> </li> </ol> </div> </li> </div> </div> <li> <div> <div class="adm"> <div id="q_3467" class="ajR h4" data-tooltip="Скрыть развернутую часть" aria-label="Скрыть развернутую часть"> <div class="ajT"></div> </div> </div> <div class="im"> <code>/home/web/{server}/env/local/lib/<wbr>python2.7/site-packages/cms/<wbr>models/pluginmodel.py</code> in <b><i><code>copy_plugin</code></i></b><br> <div> <ol start="262"> <li> <pre style="margin-top:2px;margin-bottom:4px"> new_plugin.tree_id = None</pre> </li> <li> <pre style="margin-top:2px;margin-bottom:4px"> new_plugin.lft = None</pre> </li> <li> <pre style="margin-top:2px;margin-bottom:4px"> new_plugin.rght = None</pre> </li> <li> <pre style="margin-top:2px;margin-bottom:4px"> new_plugin.level = None</pre> </li> <li> <pre style="margin-top:2px;margin-bottom:4px"> # we assign a parent to our new plugin</pre> </li> <li> <pre style="margin-top:2px;margin-bottom:4px"> parent_cache[<a href="http://self.pk" target="_blank" data-saferedirecturl="https://www.google.com/url?q=http://self.pk&amp;source=gmail&amp;ust=1543917559762000&amp;usg=AFQjCNHA1fITgIG5iMx3-WhJslJnI7C93w">self.pk</a>] = new_plugin</pre> </li> <li> <pre style="margin-top:2px;margin-bottom:4px"> if self.parent:</pre> </li> </ol> <ol start="269"> <li> <pre style="margin-top:2px;margin-bottom:4px;background-color:silver"> parent = parent_cache[self.parent_id]</pre> </li> </ol> <ol start="270"> <li> <pre style="margin-top:2px;margin-bottom:4px"> parent = CMSPlugin.objects.get(pk=<a href="http://parent.pk" target="_blank" data-saferedirecturl="https://www.google.com/url?q=http://parent.pk&amp;source=gmail&amp;ust=1543917559762000&amp;usg=AFQjCNFGT3pVfRO_1lQtYqOpISsxfI7UMg">paren<wbr>t.pk</a>)</pre> </li> <li> <pre style="margin-top:2px;margin-bottom:4px"> new_plugin.parent = parent</pre> </li> <li> <pre style="margin-top:2px;margin-bottom:4px"> new_plugin.level = None</pre> </li> <li> <pre style="margin-top:2px;margin-bottom:4px"> new_plugin.language = target_language</pre> </li> <li> <pre style="margin-top:2px;margin-bottom:4px"> new_plugin.plugin_type = self.plugin_type</pre> </li> <li> <pre style="margin-top:2px;margin-bottom:4px"> new_plugin.position = self.position</pre> </li> </ol> </div> </div> </div> <h3>Local Vars (last frame) <table cellspacing="0" cellpadding="2" border="1"> <thead> <tr> <th>Variable</th> <th>Value</th> </tr> </thead> <tbody style="font-size:9pt"> <tr> <td>self</td> <td> <pre>&lt;CMSPlugin: 472264&gt;</pre> </td> </tr> <tr> <td>no_signals</td> <td> <pre>True</pre> </td> </tr> <tr> <td>target_placeholder</td> <td> <pre>&lt;Placeholder: content&gt;</pre> </td> </tr> <tr> <td>new_plugin</td> <td> <pre>&lt;CMSPlugin: None&gt;</pre> </td> </tr> <tr> <td>parent_cache</td> <td> <pre>{184070: &lt;CMSPlugin: 665251&gt;, 184071: &lt;CMSPlugin: 665252&gt;, 184072: &lt;CMSPlugin: 665355&gt;, 184074: &lt;CMSPlugin: 665448&gt;, 220306: &lt;CMSPlugin: 665543&gt;, 220307: &lt;CMSPlugin: 665544&gt;, 220308: &lt;CMSPlugin: 665253&gt;, 220309: &lt;CMSPlugin: 665254&gt;, 220310: &lt;CMSPlugin: 665255&gt;, 220311: &lt;CMSPlugin: 665256&gt;, 220312: &lt;CMSPlugin: 665258&gt;, 220313: &lt;CMSPlugin: 665259&gt;, 220314: &lt;CMSPlugin: 665264&gt;, 220315: &lt;CMSPlugin: 665265&gt;, 220316: &lt;CMSPlugin: 665266&gt;, 220317: &lt;CMSPlugin: 665267&gt;, 220318: &lt;CMSPlugin: 665283&gt;, 220319: &lt;CMSPlugin: 665284&gt;, 220320: &lt;CMSPlugin: 665298&gt;, 220321: &lt;CMSPlugin: 665299&gt;, 220322: &lt;CMSPlugin: 665324&gt;, 220323: &lt;CMSPlugin: 665325&gt;, 220324: &lt;CMSPlugin: 665356&gt;, 220325: &lt;CMSPlugin: 665362&gt;, 220326: &lt;CMSPlugin: 665367&gt;, 220327: &lt;CMSPlugin: 665373&gt;, 220328: &lt;CMSPlugin: 665377&gt;, 220329: &lt;CMSPlugin: 665385&gt;, 220330: &lt;CMSPlugin: 665402&gt;, 220331: &lt;CMSPlugin: 665424&gt;, 220332: &lt;CMSPlugin: 665449&gt;, 220333: &lt;CMSPlugin: 665453&gt;, 220334: &lt;CMSPlugin: 665458&gt;, 220335: &lt;CMSPlugin: 665465&gt;, 220336: &lt;CMSPlugin: 665469&gt;, 220337: &lt;CMSPlugin: 665478&gt;, 220338: &lt;CMSPlugin: 665492&gt;, 220339: &lt;CMSPlugin: 665521&gt;, 220340: &lt;CMSPlugin: 665358&gt;, 220341: &lt;CMSPlugin: 665363&gt;, 220342: &lt;CMSPlugin: 665368&gt;, 220343: &lt;CMSPlugin: 665374&gt;, 220344: &lt;CMSPlugin: 665378&gt;, 220345: &lt;CMSPlugin: 665386&gt;, 220346: &lt;CMSPlugin: 665403&gt;, 220347: &lt;CMSPlugin: 665425&gt;, 220348: &lt;CMSPlugin: 665450&gt;, 220349: &lt;CMSPlugin: 665454&gt;, 220350: &lt;CMSPlugin: 665459&gt;, 220351: &lt;CMSPlugin: 665466&gt;, 220352: &lt;CMSPlugin: 665470&gt;, 220353: &lt;CMSPlugin: 665479&gt;, 220354: &lt;CMSPlugin: 665493&gt;, 220355: &lt;CMSPlugin: 665522&gt;, 220591: &lt;CMSPlugin: 665352&gt;, 220594: &lt;CMSPlugin: 665443&gt;, 220596: &lt;CMSPlugin: 665531&gt;, 220597: &lt;CMSPlugin: 665532&gt;, 220598: &lt;CMSPlugin: 665538&gt;, 220599: &lt;CMSPlugin: 665353&gt;, 220600: &lt;CMSPlugin: 665444&gt;, 220601: &lt;CMSPlugin: 665445&gt;, 220602: &lt;CMSPlugin: 665354&gt;, 220603: &lt;CMSPlugin: 665541&gt;, 221219: &lt;CMSPlugin: 665545&gt;, 221220: &lt;CMSPlugin: 665547&gt;, 221221: &lt;CMSPlugin: 665554&gt;, 221261: &lt;CMSPlugin: 665285&gt;, 221262: &lt;CMSPlugin: 665286&gt;, 221263: &lt;CMSPlugin: 665287&gt;, 221272: &lt;CMSPlugin: 665548&gt;, 221281: &lt;CMSPlugin: 665546&gt;, 229616: &lt;CMSPlugin: 665268&gt;, 229725: &lt;CMSPlugin: 665497&gt;, 229726: &lt;CMSPlugin: 665480&gt;, 229727: &lt;CMSPlugin: 665387&gt;, 229728: &lt;CMSPlugin: 665288&gt;, 229729: &lt;CMSPlugin: 665524&gt;, 229730: &lt;CMSPlugin: 665525&gt;, 229731: &lt;CMSPlugin: 665526&gt;, 229732: &lt;CMSPlugin: 665498&gt;, 229733: &lt;CMSPlugin: 665499&gt;, 229734: &lt;CMSPlugin: 665500&gt;, 229735: &lt;CMSPlugin: 665501&gt;, 229736: &lt;CMSPlugin: 665502&gt;, 229737: &lt;CMSPlugin: 665503&gt;, 229738: &lt;CMSPlugin: 665471&gt;, 229739: &lt;CMSPlugin: 665472&gt;, 229740: &lt;CMSPlugin: 665473&gt;, 229741: &lt;CMSPlugin: 665481&gt;, 229742: &lt;CMSPlugin: 665482&gt;, 229743: &lt;CMSPlugin: 665483&gt;, 229886: &lt;CMSPlugin: 665306&gt;, 229887: &lt;CMSPlugin: 665307&gt;, 229888: &lt;CMSPlugin: 665308&gt;, 229889: &lt;CMSPlugin: 665269&gt;, 229890: &lt;CMSPlugin: 665270&gt;, 229891: &lt;CMSPlugin: 665271&gt;, 229892: &lt;CMSPlugin: 665272&gt;, 229893: &lt;CMSPlugin: 665273&gt;, 229894: &lt;CMSPlugin: 665289&gt;, 229895: &lt;CMSPlugin: 665290&gt;, 229896: &lt;CMSPlugin: 665291&gt;, 229897: &lt;CMSPlugin: 665292&gt;, 229898: &lt;CMSPlugin: 665293&gt;, 229899: &lt;CMSPlugin: 665294&gt;, 229900: &lt;CMSPlugin: 665309&gt;, 229901: &lt;CMSPlugin: 665310&gt;, 229902: &lt;CMSPlugin: 665311&gt;, 229903: &lt;CMSPlugin: 665312&gt;, 229904: &lt;CMSPlugin: 665313&gt;, 229905: &lt;CMSPlugin: 665314&gt;, 229906: &lt;CMSPlugin: 665336&gt;, 229907: &lt;CMSPlugin: 665340&gt;, 484528: &lt;CMSPlugin: 665535&gt;, 484529: &lt;CMSPlugin: 665536&gt;, 484530: &lt;CMSPlugin: 665537&gt;, 547634: &lt;CMSPlugin: 665553&gt;, 547638: &lt;CMSPlugin: 665494&gt;, 547639: &lt;CMSPlugin: 665301&gt;, 548304: &lt;CMSPlugin: 665262&gt;, 548306: &lt;CMSPlugin: 665463&gt;, 564010: &lt;CMSPlugin: 665399&gt;, 592455: &lt;CMSPlugin: 665302&gt;, 592456: &lt;CMSPlugin: 665400&gt;, 592457: &lt;CMSPlugin: 665495&gt;, 603927: &lt;CMSPlugin: 665303&gt;, 603928: &lt;CMSPlugin: 665338&gt;, 609999: &lt;CMSPlugin: 665523&gt;, 620251: &lt;CMSPlugin: 665263&gt;, 620252: &lt;CMSPlugin: 665372&gt;, 620253: &lt;CMSPlugin: 665464&gt;, 629124: &lt;CMSPlugin: 665539&gt;, 629125: &lt;CMSPlugin: 665540&gt;, 645123: &lt;CMSPlugin: 665282&gt;, 645124: &lt;CMSPlugin: 665339&gt;, 652550: &lt;CMSPlugin: 665304&gt;, 652551: &lt;CMSPlugin: 665401&gt;, 652552: &lt;CMSPlugin: 665305&gt;, 653308: &lt;CMSPlugin: 665496&gt;, 657288: &lt;CMSPlugin: 665549&gt;, 657289: &lt;CMSPlugin: 665550&gt;}</pre> </td> </tr> <tr> <td>plugin_instance</td> <td> <pre>&lt;FilerFile: Рабочая программа дисциплины&gt;</pre> </td> </tr> <tr> <td>target_language</td> <td> <pre>u'ru'</pre> </td> </tr> <tr> <td>cls</td> <td> <pre>Error in formatting: __repr__ returned non-string (type __proxy__)</pre> </td> </tr> </tbody> </table> </h3> </li> </ul> </div> <div> <div class="adm"> <div id="q_3465" class="ajR h4"> <div class="ajT"></div> </div> </div> <div class="h5"> <h2>Request information</h2> <h3>POST</h3> <p>No POST data</p> <h3>META</h3> </div> </div> <table cellspacing="0" cellpadding="2" border="1"> <thead> <tr> <th>Variable</th> <th>Value</th> </tr> </thead> <tbody style="font-size:9pt"> <tr> <td>wsgi.multiprocess</td> <td> <pre>True</pre> </td> </tr> <tr> <td>HTTP_REFERER</td> <td> <pre>************************</pre> </td> </tr> <tr> <td>uwsgi.version</td> <td> <pre>'1.9.16'</pre> </td> </tr> <tr> <td>SCRIPT_NAME</td> <td> <pre>u''</pre> </td> </tr> <tr> <td>REQUEST_METHOD</td> <td> <pre>'GET'</pre> </td> </tr> <tr> <td>PATH_INFO</td> <td> <pre>u'/ru/admin/cms/page/6154/ru/<wbr>publish/'</pre> </td> </tr> <tr> <td>SERVER_PROTOCOL</td> <td> <pre>'HTTP/1.0'</pre> </td> </tr> <tr> <td>QUERY_STRING</td> <td> <pre>''</pre> </td> </tr> <tr> <td>HTTP_X_REAL_IP</td> <td> <pre>***************</pre> </td> </tr> <tr> <td>CONTENT_LENGTH</td> <td> <pre>''</pre> </td> </tr> <tr> <td>HTTP_USER_AGENT</td> <td> <pre>'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36'</pre> </td> </tr> <tr> <td>HTTP_CONNECTION</td> <td> <pre>'close'</pre> </td> </tr> <tr> <td>HTTP_COOKIE</td> <td> <pre>******************</pre> </td> </tr> <tr> <td>SERVER_NAME</td> <td> <pre>***************************</pre> </td> </tr> <tr> <td>REMOTE_ADDR</td> <td> <pre>'*************************'</pre> </td> </tr> <tr> <td>wsgi.url_scheme</td> <td> <pre>'http'</pre> </td> </tr> <tr> <td>SERVER_PORT</td> <td> <pre>'80'</pre> </td> </tr> <tr> <td>uwsgi.node</td> <td> <pre>'{server}'</pre> </td> </tr> <tr> <td>DOCUMENT_ROOT</td> <td> <pre>'/etc/nginx/html'</pre> </td> </tr> <tr> <td>wsgi.input</td> <td> <pre>&lt;uwsgi._Input object at 0x15000d60&gt;</pre> </td> </tr> <tr> <td>HTTP_HOST</td> <td> <pre>************************</pre> </td> </tr> <tr> <td>wsgi.multithread</td> <td> <pre>False</pre> </td> </tr> <tr> <td>HTTP_UPGRADE_INSECURE_REQUESTS</td> <td> <pre>'1'</pre> </td> </tr> <tr> <td>REQUEST_URI</td> <td> <pre>'/ru/admin/cms/page/6154/ru/<wbr>publish/'</pre> </td> </tr> <tr> <td>HTTP_ACCEPT</td> <td> <pre>'text/html,application/xhtml+<wbr>xml,application/xml;q=0.9,<wbr>image/webp,image/apng,*/*;q=0.<wbr>8'</pre> </td> </tr> <tr> <td>wsgi.version</td> <td> <pre>(1, 0)</pre> </td> </tr> <tr> <td>HTTP_X_FORWARDED_FOR</td> <td> <pre>'*************************'</pre> </td> </tr> <tr> <td>wsgi.errors</td> <td> <pre>&lt;open file 'wsgi_errors', mode 'w' at 0xf6fd1a18&gt;</pre> </td> </tr> <tr> <td>REMOTE_PORT</td> <td> <pre>''</pre> </td> </tr> <tr> <td>HTTP_ACCEPT_LANGUAGE</td> <td> <pre>'ru-RU,ru;q=0.9,en-US;q=0.8,<wbr>en;q=0.7'</pre> </td> </tr> <tr> <td>wsgi.run_once</td> <td> <pre>False</pre> </td> </tr> <tr> <td>CONTENT_TYPE</td> <td> <pre>''</pre> </td> </tr> <tr> <td>wsgi.file_wrapper</td> <td> <pre>''</pre> </td> </tr> <tr> <td>CSRF_COOKIE</td> <td> <pre>u'<wbr>zazTNJ0BQAWA0CqbRevf2EpbzXEYch<wbr>FE'</pre> </td> </tr> <tr> <td>HTTP_ACCEPT_ENCODING</td> <td> <pre>'gzip, deflate'</pre> </td> </tr> </tbody> </table> <div class="yj6qo"></div> <div class="adL"> </div> </div>