Error: 0xC001000E. Connection Element not found

Hi,

I created incremental upload ssis package using visual studio which was intended to use with batch file. Package runs fine in visual studio, but when i try to run the same package through the use of bat file throws me an missing conection element error message.

Error as follows;

Started:  2:55:47 PM
Error: 2020-03-25 14:55:47.19
   Code: 0xC001000E
   Source: Package
   Description: The connection "SourceConnectionFlatFile" is not found. This error is thrown by Connections collection when the specific connection element is not found.
End Error
DTExec: Could not find the SourceConnectionFlatFile connection in the package.

I don't know how to fix this error this makes no sense. Maybe i am not properly utilizing the package file i just copy pasted the package file which is .dtsx extension to different folder to use it with that bat file. Looking forward for help.

TIA.