Trying to Migrate a joomla and magento website

Hello, I have two micro projects both are related to migration. let me tell you about the projects first. Am moving my servers to AWS. First migration is joomla migration, am migrating it to a new server and i have copied all the files and also uploaded the database. I have changed the db name and everything in [login to view URL] but its giving me " Error displaying the error page: Application Instantiation Error" i tried all things but unable to solve this error. I have local database as well as RDS both have the same error. I need some one who has experience in resolving the error. Second project is related to magento which is completely migrated but its missing style sheets. Basically the main website fetches CSS and JS from CDN but once its comes to the New server its not getting the link. I want you to copy those css and java files locally and change the location in magento. I will give u access to my machine so you have to do everything locally. I will be there to help you regarding servers because that's my expertise. I need a reliable and experience freelancer who has the patience to work with me. I dont want auto bids and copy and paste. all those bids will be rejected. Thanks Sudhan Senior System Admin