ERROR: Content Element with uid "7906" and type "shortcut" has no rendering definition!

ERROR: Content Element with uid "2937" and type "image" has no rendering definition!

ERROR: Content Element with uid "2941" and type "gridelements_pi1" has no rendering definition!

ERROR: Content Element with uid "8677" and type "shortcut" has no rendering definition!

ERROR: Content Element with uid "2936" and type "text" has no rendering definition!

ERROR: Content Element with uid "2939" and type "gridelements_pi1" has no rendering definition!

ERROR: Content Element with uid "2940" and type "list" has no rendering definition!