Undefined variable: select_states in Drupal\conditional_fields\Plugin\conditional_fields\handler\Select->statesHandler() and Invalid argument supplied for foreach() in Drupal\conditional_fields\Plugin\conditional_fields\handler\Select->statesHandler()

After loading a contact form with conditional fields my error log show the following two errors and the form will not submit.
How to recreate:

1. make a contact form
2. add some custom fields
3. add conditional field settings for the custom fields
4. load the form and fill it out and try and submit
5. form will not submit; check logs for errors

After some testing the errors below are only a problem if the custom field is a select list. If it is a checkbox or radio button it is fine.

Notice: Undefined variable: select_states in Drupal\conditional_fields\Plugin\conditional_fields\handler\Select->statesHandler() (line 57 of /var/www/vhosts/bluefieldstate.edu/modules/conditional_fields/src/Plugin/conditional_fields/handler/Select.php) #0 /var/www/vhosts/bluefieldstate.edu/core/includes/bootstrap.inc(566): _drupal_error_handler_real(8, 'Undefined varia...', '/var/www/vhosts...', 57, Array) #1 /var/www/vhosts/bluefieldstate.edu/modules/conditional_fields/src/Plugin/conditional_fields/handler/Select.php(57): _drupal_error_handler(8, 'Undefined varia...', '/var/www/vhosts...', 57, Array) #2 /var/www/vhosts/bluefieldstate.edu/modules/conditional_fields/conditional_fields.api.inc(225): Drupal\conditional_fields\Plugin\conditional_fields\handler\Select->statesHandler(Array, NULL, Array) #3 /var/www/vhosts/bluefieldstate.edu/modules/conditional_fields/conditional_fields.api.inc(85): conditional_fields_get_state(Object(Drupal\Core\Entity\Entity\EntityFormDisplay), 'field_type_of_c...', Array, Array) #4 [internal function]: conditional_fields_form_after_build(Array, Object(Drupal\Core\Form\FormState)) #5 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/Form/FormBuilder.php(1053): call_user_func_array('conditional_fie...', Array) #6 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/Form/FormBuilder.php(557): Drupal\Core\Form\FormBuilder->doBuildForm('contact_message...', Array, Object(Drupal\Core\Form\FormState)) #7 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/Form/FormBuilder.php(314): Drupal\Core\Form\FormBuilder->processForm('contact_message...', Array, Object(Drupal\Core\Form\FormState)) #8 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/Entity/EntityFormBuilder.php(48): Drupal\Core\Form\FormBuilder->buildForm(Object(Drupal\contact\MessageForm), Object(Drupal\Core\Form\FormState)) #9 /var/www/vhosts/bluefieldstate.edu/modules/contact_storage/src/ContactFormViewBuilder.php(92): Drupal\Core\Entity\EntityFormBuilder->getForm(Object(Drupal\contact\Entity\Message)) #10 /var/www/vhosts/bluefieldstate.edu/modules/contact_storage/src/Controller/ContactStorageController.php(42): Drupal\contact_storage\ContactFormViewBuilder->view(Object(Drupal\contact\Entity\ContactForm), 'full', Object(Drupal\Core\Language\Language)) #11 [internal function]: Drupal\contact_storage\Controller\ContactStorageController->contactSitePage(Object(Drupal\contact\Entity\ContactForm)) #12 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(123): call_user_func_array(Array, Array) #13 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/Render/Renderer.php(574): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() #14 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(124): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure)) #15 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(97): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) #16 [internal function]: Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() #17 /var/www/vhosts/bluefieldstate.edu/vendor/symfony/http-kernel/HttpKernel.php(144): call_user_func_array(Object(Closure), Array) #18 /var/www/vhosts/bluefieldstate.edu/vendor/symfony/http-kernel/HttpKernel.php(64): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1) #19 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/StackMiddleware/Session.php(57): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #20 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(47): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #21 /var/www/vhosts/bluefieldstate.edu/core/modules/page_cache/src/StackMiddleware/PageCache.php(99): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #22 /var/www/vhosts/bluefieldstate.edu/core/modules/page_cache/src/StackMiddleware/PageCache.php(78): Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true) #23 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(47): Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #24 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(50): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #25 /var/www/vhosts/bluefieldstate.edu/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #26 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/DrupalKernel.php(656): Stack\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #27 /var/www/vhosts/bluefieldstate.edu/index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request)) #28 {main}.

Warning: Invalid argument supplied for foreach() in Drupal\conditional_fields\Plugin\conditional_fields\handler\Select->statesHandler() (line 47 of /var/www/vhosts/bluefieldstate.edu/modules/conditional_fields/src/Plugin/conditional_fields/handler/Select.php) #0 /var/www/vhosts/bluefieldstate.edu/core/includes/bootstrap.inc(566): _drupal_error_handler_real(2, 'Invalid argumen...', '/var/www/vhosts...', 47, Array) #1 /var/www/vhosts/bluefieldstate.edu/modules/conditional_fields/src/Plugin/conditional_fields/handler/Select.php(47): _drupal_error_handler(2, 'Invalid argumen...', '/var/www/vhosts...', 47, Array) #2 /var/www/vhosts/bluefieldstate.edu/modules/conditional_fields/conditional_fields.api.inc(225): Drupal\conditional_fields\Plugin\conditional_fields\handler\Select->statesHandler(Array, NULL, Array) #3 /var/www/vhosts/bluefieldstate.edu/modules/conditional_fields/conditional_fields.api.inc(85): conditional_fields_get_state(Object(Drupal\Core\Entity\Entity\EntityFormDisplay), 'field_type_of_c...', Array, Array) #4 [internal function]: conditional_fields_form_after_build(Array, Object(Drupal\Core\Form\FormState)) #5 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/Form/FormBuilder.php(1053): call_user_func_array('conditional_fie...', Array) #6 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/Form/FormBuilder.php(557): Drupal\Core\Form\FormBuilder->doBuildForm('contact_message...', Array, Object(Drupal\Core\Form\FormState)) #7 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/Form/FormBuilder.php(314): Drupal\Core\Form\FormBuilder->processForm('contact_message...', Array, Object(Drupal\Core\Form\FormState)) #8 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/Entity/EntityFormBuilder.php(48): Drupal\Core\Form\FormBuilder->buildForm(Object(Drupal\contact\MessageForm), Object(Drupal\Core\Form\FormState)) #9 /var/www/vhosts/bluefieldstate.edu/modules/contact_storage/src/ContactFormViewBuilder.php(92): Drupal\Core\Entity\EntityFormBuilder->getForm(Object(Drupal\contact\Entity\Message)) #10 /var/www/vhosts/bluefieldstate.edu/modules/contact_storage/src/Controller/ContactStorageController.php(42): Drupal\contact_storage\ContactFormViewBuilder->view(Object(Drupal\contact\Entity\ContactForm), 'full', Object(Drupal\Core\Language\Language)) #11 [internal function]: Drupal\contact_storage\Controller\ContactStorageController->contactSitePage(Object(Drupal\contact\Entity\ContactForm)) #12 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(123): call_user_func_array(Array, Array) #13 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/Render/Renderer.php(574): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() #14 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(124): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure)) #15 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(97): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) #16 [internal function]: Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() #17 /var/www/vhosts/bluefieldstate.edu/vendor/symfony/http-kernel/HttpKernel.php(144): call_user_func_array(Object(Closure), Array) #18 /var/www/vhosts/bluefieldstate.edu/vendor/symfony/http-kernel/HttpKernel.php(64): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1) #19 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/StackMiddleware/Session.php(57): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #20 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(47): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #21 /var/www/vhosts/bluefieldstate.edu/core/modules/page_cache/src/StackMiddleware/PageCache.php(99): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #22 /var/www/vhosts/bluefieldstate.edu/core/modules/page_cache/src/StackMiddleware/PageCache.php(78): Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true) #23 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(47): Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #24 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(50): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #25 /var/www/vhosts/bluefieldstate.edu/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #26 /var/www/vhosts/bluefieldstate.edu/core/lib/Drupal/Core/DrupalKernel.php(656): Stack\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #27 /var/www/vhosts/bluefieldstate.edu/index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request)) #28 {main}.