user error "id" is an invalid render array key

Going to admin/reports/fields/permissions, I get the following error:

 User error: "id" is an invalid render array key in Drupal\Core\Render\Element::children() (line 97 of                         
               /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Render/Element.php) #0                                                         
               /Users/rppowell/Sites/hou/core/includes/bootstrap.inc(552): _drupal_error_handler_real(256, '"id" is an inva...',             
               '/Users/rppowell...', 97, Array)                                                                                              
               #1 [internal function]: _drupal_error_handler(256, '"id" is an inva...', '/Users/rppowell...', 97, Array)                     
               #2 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Render/Element.php(97): trigger_error('"id" is an inva...', 256)            
               #3 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Render/Renderer.php(406): Drupal\Core\Render\Element::children(Array, true) 
               #4 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Render/Renderer.php(195): Drupal\Core\Render\Renderer->doRender(Array,      
               false)                                                                                                                        
               #5 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Template/TwigExtension.php(490): Drupal\Core\Render\Renderer->render(Array) 
               #6                                                                                                                            
               /Users/rppowell/Sites/hou/sites/default/files/php/twig/5924c0acc2b34_table.html.twig_WzfUyz-QigqQFjRyrFjCNRCJk/wQpW0DL9NEtM9B 
               9tIFoQTtYZWc-gufTmqIVyQB_Xh0I.php(183):                                                                                       
               Drupal\Core\Template\TwigExtension->escapeFilter(Object(Drupal\Core\Template\TwigEnvironment), Array, 'html', NULL, true)     
               #7 /Users/rppowell/Sites/hou/vendor/twig/twig/lib/Twig/Template.php(432):                                                     
               __TwigTemplate_98cf6ee9c325be56e5f6e2b50b209532e42534eaeb86ca76b1fbc0eee1a03602->doDisplay(Array, Array)                      
               #8 /Users/rppowell/Sites/hou/vendor/twig/twig/lib/Twig/Template.php(403): Twig_Template->displayWithErrorHandling(Array,      
               Array)                                                                                                                        
               #9 /Users/rppowell/Sites/hou/vendor/twig/twig/lib/Twig/Template.php(411): Twig_Template->display(Array)                       
               #10 /Users/rppowell/Sites/hou/core/themes/engines/twig/twig.engine(64): Twig_Template->render(Array)                          
               #11 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Theme/ThemeManager.php(384): twig_render_template('core/themes/cla...',    
               Array)                                                                                                                        
               #12 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Render/Renderer.php(435): Drupal\Core\Theme\ThemeManager->render('table',  
               Array)                                                                                                                        
               #13 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Render/Renderer.php(448): Drupal\Core\Render\Renderer->doRender(Array)     
               #14 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Render/Renderer.php(195): Drupal\Core\Render\Renderer->doRender(Array,     
               false)                                                                                                                        
               #15 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(226):                                  
               Drupal\Core\Render\Renderer->render(Array, false)                                                                             
               #16 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Render/Renderer.php(574):                                                  
               Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}()                                       
               #17 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(227):                                  
               Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure))                
               #18 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(117):                                  
               Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object(Symfony\Component\HttpFoundation\Request),                 
               Object(Drupal\Core\Routing\CurrentRouteMatch))                                                                                
               #19 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php(90):                         
               Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object(Symfony\Component\HttpFoundation\Request),          
               Object(Drupal\Core\Routing\CurrentRouteMatch))                                                                                
               #20 /Users/rppowell/Sites/hou/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(111):               
               Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object(Symfony\Component\HttpKernel\Event\GetRespons 
               eForControllerResultEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher))            
               #21 /Users/rppowell/Sites/hou/vendor/symfony/http-kernel/HttpKernel.php(149):                                                 
               Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.view',                                       
               Object(Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent))                                               
               #22 /Users/rppowell/Sites/hou/vendor/symfony/http-kernel/HttpKernel.php(64):                                                  
               Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1)                       
               #23 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/StackMiddleware/Session.php(57):                                           
               Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)                    
               #24 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(47):                                   
               Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)                        
               #25 /Users/rppowell/Sites/hou/core/modules/page_cache/src/StackMiddleware/PageCache.php(99):                                  
               Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)                
               #26 /Users/rppowell/Sites/hou/core/modules/page_cache/src/StackMiddleware/PageCache.php(78):                                  
               Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true)                  
               #27 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(47):                            
               Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)                
               #28 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(50):                             
               Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)         
               #29 /Users/rppowell/Sites/hou/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23):                                       
               Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)          
               #30 /Users/rppowell/Sites/hou/core/lib/Drupal/Core/DrupalKernel.php(656):                                                     
               Stack\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)                                    
               #31 /Users/rppowell/Sites/hou/index.php(19):                                                                                  
               Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request))                                            
               #32 {main}.    

I get that for both dev and beta.