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Users receive the following error when attempting to access an application or object in /design:
ERROR com.appiancorp.rest.shared.AppianExceptionMapper - Internal Server Error on REST API invocation.com.appiancorp.exceptions.LocalizedAppianRuntimeException$LocalizedAppianException: Expression evaluation error : A side by side layout has an invalid item. The item at index 2 contains a component that is not supported in a side by side layout. Received: <X>.
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