No you can use the Free DNG converter program to convert your cameras native RAW files to DNG files and then import them into LR 5.
thank you for your response however even the dng converter is saying : the source folder does not contain any supported camera files....its a rebel t6i
Do you have the latest release of the DNG converter? That would be 9.4. If not then download that and install it then try again.
Although that camera was released in June of 2015 so I would think the DNG converters 9.2 on up should work.
Google Adobe DNG converter 9.4 for the correct download.
Also check what folder you have selected to store the DNG files in. Your Username has to have Read + Write permissions for the converter to store the DNG images in.