Error while editing existing content.

Hi, I was trying to check this module. But it gives error while editing existing content.

InvalidArgumentException: Field field_landingpage_paragraphs is unknown. in Drupal\Core\Entity\ContentEntityBase->getTranslatedField() (line 471 of /Users/sunil/project/cgi_poc_two/docroot/core/lib/Drupal/Core/Entity/ContentEntityBase.php).

1. I installed the module,
2. As, I am already using paragraphs in my content, so I edit my content to see this module items in paragraph items list, then encounter the error. while checking the log I found the above error.

Regards
Sunil S.