Package Validation Error- failed validation and returned error code 0xC004800B

TITLE: Package Validation Error
------------------------------

Package Validation Error

------------------------------
ADDITIONAL INFORMATION:

Error at dfImportData [SSIS.Pipeline]: Cannot find the connection manager with ID "{D9F5E117-B143-40BA-8FB6-7DC8F3095382}" in the connection manager collection due to error code 0xC0010009. That connection manager is needed by "runtime connection "OleDbConnection" (8)" in the connection manager collection of "component "Excel Source" (1)". Verify that a connection manager in the connection manager collection, Connections, has been created with that ID.

Error at dfImportData [SSIS.Pipeline]: component "Excel Source" (1) failed validation and returned error code 0xC004800B.

Error at dfImportData [SSIS.Pipeline]: One or more component failed validation.

Error at dfImportData: There were errors during task validation.

 (Microsoft.DataTransformationServices.VsIntegration)

------------------------------
BUTTONS:

OK
------------------------------