Server error 500 when trying to upload file on laravel application hosted on digital ocean

I am facing an issue when I try to upload this excel file that gets processed and stored in the database. On my localhost this is working so I can upload the file and using laravel-excel, it is being saved in the database.

However, on the same laravel app hosted on digital ocean, I am always getting 500 Internal server errors when I try to submit the file, Can somebody help?

via Chebli Mohamed