Error on indexing when field has name "from" and "to"

I agree, more details are definitely needed. For instance, which database are you using?

@drunken monkey MariaDB

Sorry, I could not reproduce the problem, and I’m also always using MariaDB.
Are you able to reproduce the problem on a fresh installation, only using Core modules and the Search API?

Have seen this error at least once while working on reducing technical debt -- many moving parts. Unfortunately, I have not been able to reproduce it yet.

My environment:

1. Drupal Core 10.1.4
2. PHP 8.2.11
3. MySQL 5.7.42-log
4. drupal/search_api 8.x-1.29
5. drupal/search_api_solr 4.2.12
6. drupal/search_api_solr_legacy 4.2.12

Error message:

User error: "cache" is an invalid render array key in Drupal\Core\Render\Element::children() (line 98 of C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\Render\Element.php)
```
#0 C:\xampp\htdocs\cia-drupal\docroot\core\includes\bootstrap.inc(164): _drupal_error_handler_real(256, '"cache" is an i...', 'C:\\xampp\\htdocs...', 98)
#1 [internal function]: _drupal_error_handler(256, '"cache" is an i...', 'C:\\xampp\\htdocs...', 98)
#2 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\Render\Element.php(98): trigger_error('"cache" is an i...', 256)
#3 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\Render\Renderer.php(416): Drupal\Core\Render\Element::children(Array, false)
#4 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\Render\Renderer.php(458): Drupal\Core\Render\Renderer->doRender(Array)
#5 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\Render\Renderer.php(458): Drupal\Core\Render\Renderer->doRender(Array)
#6 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\Render\Renderer.php(458): Drupal\Core\Render\Renderer->doRender(Array)
#7 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\Render\Renderer.php(204): Drupal\Core\Render\Renderer->doRender(Array, true)
#8 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\Render\Renderer.php(148): Drupal\Core\Render\Renderer->render(Array, true)
#9 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\Render\Renderer.php(592): Drupal\Core\Render\Renderer->Drupal\Core\Render\{closure}()
#10 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\Render\Renderer.php(147): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure))
#11 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\Render\MainContent\AjaxRenderer.php(66): Drupal\Core\Render\Renderer->renderRoot(Array)
#12 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\EventSubscriber\MainContentViewSubscriber.php(90): Drupal\Core\Render\MainContent\AjaxRenderer->renderResponse(Array, Object(Symfony\Component\HttpFoundation\Request), Object(Drupal\Core\Routing\CurrentRouteMatch))
#13 [internal function]: Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object(Symfony\Component\HttpKernel\Event\ViewEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher))
#14 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher.php(111): call_user_func(Array, Object(Symfony\Component\HttpKernel\Event\ViewEvent), 'kernel.view', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher))
#15 C:\xampp\htdocs\cia-drupal\vendor\symfony\http-kernel\HttpKernel.php(187): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object(Symfony\Component\HttpKernel\Event\ViewEvent), 'kernel.view')
#16 C:\xampp\htdocs\cia-drupal\vendor\symfony\http-kernel\HttpKernel.php(76): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1)
#17 C:\xampp\htdocs\cia-drupal\docroot\modules\contrib\simple_oauth\src\HttpMiddleware\BasicAuthSwap.php(68): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#18 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\StackMiddleware\Session.php(58): Drupal\simple_oauth\HttpMiddleware\BasicAuthSwap->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#19 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\StackMiddleware\KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#20 C:\xampp\htdocs\cia-drupal\docroot\core\modules\page_cache\src\StackMiddleware\PageCache.php(106): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#21 C:\xampp\htdocs\cia-drupal\docroot\core\modules\page_cache\src\StackMiddleware\PageCache.php(85): Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#22 C:\xampp\htdocs\cia-drupal\vendor\asm89\stack-cors\src\Cors.php(53): Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#23 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\StackMiddleware\ReverseProxyMiddleware.php(48): Asm89\Stack\Cors->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#24 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\StackMiddleware\NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#25 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\StackMiddleware\StackedHttpKernel.php(51): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#26 C:\xampp\htdocs\cia-drupal\docroot\core\lib\Drupal\Core\DrupalKernel.php(704): Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#27 C:\xampp\htdocs\cia-drupal\docroot\index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request))
#28 {main}
```