i am using sharepoint 2013.
adding content databases should be a straightforward process.
Is the database created when you check it on the SQL Server itself? If not it might be a permission issue when the Database is to be created.
Best place to search is the ULS log of SharePoint of the time window around 11/12/2017 11:53 and search for the corellation ID provided.
There should be more information about what happened.
Retrieving data ...