#1 "Database is locked" SQLite issues

While updating the click count in the `get_link` function, the update might fail because the database is locked, due to the poor performances of SQLite. In case `get_link` database calls manages to successfully get the link, but fails to update the link count, the error should not be propagated to `get_link`. An error should still be displayed in console, but the function must not panic and return 500 Internal Server Error. The database call must return the link without updating the link count. In case `get_link` database calls **fails** to get the link because of a locked database, then the function can return 500.