Hi, if I go to add a new taxonomy term in the CP - for example a tag in the Redwood theme I get this error:

FileNotFoundException in Fieldset.php line 55: Fieldset(s) not found: [page_options]

the big error message is this - any idea what is up here?

in Fieldset.php line 55
at Fieldset::get('page_options') in Fieldset.php line 692
at Fieldset->getFieldset('page_options') in Fieldset.php line 240
at Fieldset->Statamic\CP\{closure}(array('type' => 'partial', 'fieldset' => 'page_options'), 'page_options_1234') in CollectionsServiceProvider.php line 124
at Collection->Statamic\Providers\{closure}(object(Closure))
at call_user_func_array(object(Closure), array(object(Closure))) in Macroable.php line 75
at Collection->__call('mapWithKeys', array(object(Closure))) in Fieldset.php line 255
at Fieldset->inlinePartials(array('title' => array('type' => 'text', 'width' => '66', 'localizable' => true), 'slug' => array('type' => 'text', 'width' => '33'), 'content' => array('type' => 'markdown', 'display' => 'Content', 'localizable' => true, 'cheatsheet' => false, 'restrict_assets' => false), 'template' => array('type' => 'template', 'instructions' => 'Choose a template', 'display' => 'Template', 'width' => '33'), 'page_options_1234' => array('type' => 'partial', 'fieldset' => 'page_options'))) in Fieldset.php line 214
at Fieldset->inlinedFields() in Fieldset.php line 265
at Fieldset->fieldtypes() in Processor.php line 20
at Processor->__construct(object(Fieldset)) in ProcessesFields.php line 11
at PublishController->addBlankFields(object(Fieldset)) in PublishTaxonomyController.php line 30
at PublishTaxonomyController->create('tags')
at call_user_func_array(array(object(PublishTaxonomyController), 'create'), array('collection' => 'tags')) in Controller.php line 256
at Controller->callAction('create', array('collection' => 'tags')) in ControllerDispatcher.php line 164
at ControllerDispatcher->call(object(PublishTaxonomyController), object(Route), 'create') in ControllerDispatcher.php line 112
at ControllerDispatcher->Illuminate\Routing\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 139
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 102
at Pipeline->then(object(Closure)) in ControllerDispatcher.php line 114
at ControllerDispatcher->callWithinStack(object(PublishTaxonomyController), object(Route), object(Request), 'create') in ControllerDispatcher.php line 68
at ControllerDispatcher->dispatch(object(Route), object(Request), 'Statamic\Http\Controllers\PublishTaxonomyController', 'create') in Route.php line 203
at Route->runWithCustomDispatcher(object(Request)) in Route.php line 134
at Route->run(object(Request)) in Router.php line 708
at Router->Illuminate\Routing\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 139
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in Authenticate.php line 62
at Authenticate->handle(object(Request), object(Closure))
at call_user_func_array(array(object(Authenticate), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in Outpost.php line 48
at Outpost->handle(object(Request), object(Closure))
at call_user_func_array(array(object(Outpost), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in Localize.php line 25
at Localize->handle(object(Request), object(Closure))
at call_user_func_array(array(object(Localize), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in DefaultLocale.php line 28
at DefaultLocale->handle(object(Request), object(Closure))
at call_user_func_array(array(object(DefaultLocale), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in AddHeaders.php line 19
at AddHeaders->handle(object(Request), object(Closure))
at call_user_func_array(array(object(AddHeaders), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in CpEnabled.php line 23
at CpEnabled->handle(object(Request), object(Closure))
at call_user_func_array(array(object(CpEnabled), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 102
at Pipeline->then(object(Closure)) in Router.php line 710
at Router->runRouteWithinStack(object(Route), object(Request)) in Router.php line 674
at Router->dispatchToRoute(object(Request)) in Router.php line 635
at Router->dispatch(object(Request)) in Kernel.php line 236
at Kernel->Illuminate\Foundation\Http\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 139
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in TransformsRequest.php line 31
at TransformsRequest->handle(object(Request), object(Closure))
at call_user_func_array(array(object(TrimStrings), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in VerifyCsrfToken.php line 50
at VerifyCsrfToken->handle(object(Request), object(Closure))
at call_user_func_array(array(object(VerifyCsrfToken), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in ShareErrorsFromSession.php line 49
at ShareErrorsFromSession->handle(object(Request), object(Closure))
at call_user_func_array(array(object(ShareErrorsFromSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in StartSession.php line 62
at StartSession->handle(object(Request), object(Closure))
at call_user_func_array(array(object(StartSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in AddQueuedCookiesToResponse.php line 37
at AddQueuedCookiesToResponse->handle(object(Request), object(Closure))
at call_user_func_array(array(object(AddQueuedCookiesToResponse), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in EncryptCookies.php line 59
at EncryptCookies->handle(object(Request), object(Closure))
at call_user_func_array(array(object(EncryptCookies), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in Retrieve.php line 33
at Retrieve->handle(object(Request), object(Closure))
at call_user_func_array(array(object(Retrieve), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in CheckForMaintenanceMode.php line 44
at CheckForMaintenanceMode->handle(object(Request), object(Closure))
at call_user_func_array(array(object(CheckForMaintenanceMode), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
at call_user_func(object(Closure), object(Request)) in Pipeline.php line 102
at Pipeline->then(object(Closure)) in Kernel.php line 122
at Kernel->sendRequestThroughRouter(object(Request)) in Kernel.php line 87
at Kernel->handle(object(Request)) in index.php line 167
Answered by Josh Ransley! Go to answer.