Error on opening content folder - unable to get to contents

Hi folks, One of my content editors appears to have lost a whole folder after uploading documents and linking them via another page. I cannot seem to get into the folder now it provides the following error data. Any help would be AMAZING!
We’re sorry, but there seems to be an error…
Here is the full error message:

Display traceback as text

Traceback (innermost last):

Module ZPublisher.Publish, line 60, in publish
Module ZPublisher.mapply, line 77, in mapply
Module ZPublisher.Publish, line 46, in call_object
Module Products.Five.browser.metaconfigure, line 476, in call
Module Products.Five.browser.pagetemplatefile, line 125, in call
Module Products.Five.browser.pagetemplatefile, line 59, in call
Module zope.pagetemplate.pagetemplate, line 113, in pt_render
Module zope.tal.talinterpreter, line 271, in call
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 888, in do_useMacro
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 533, in do_optTag_tal
Module zope.tal.talinterpreter, line 518, in do_optTag
Module zope.tal.talinterpreter, line 513, in no_tag
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 583, in do_setLocal_tal
Module zope.tales.tales, line 696, in evaluate
URL: file:/zope/intranet/buildout-cache/eggs/itsa.intranet-1.0dev_r393-py2.6.egg/itsa/intranet/skins/itsa.intranet/main_template.pt
Line 94, Column 2
Expression: <PythonExpr plone_view.have_portlets('plone.leftcolumn', view)>
Names:
{'args': (),
'container': <ATFolder at /intranet/site/essential-reading/people-and-capability/Aurion>,
'context': <ATFolder at /intranet/site/essential-reading/people-and-capability/Aurion>,
'default': <object object at 0x7f24e3904b50>,
'here': <ATFolder at /intranet/site/essential-reading/people-and-capability/Aurion>,
'loop': {},
'nothing': None,

There's an error in the portlets on the left column. Try to add /folder_contents to the url and go to portlet section. Otherwise, go directy adding @@manage-portlets

Thanks so much for responding Yuri, No joy with either method :frowning: both display additional errors. Is there a way I can reset the portlets prior to attempting to load it?

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