Missing required parameter

Symptom: You get an error page saying

Missing required parameters for [Route...]

Cause: There are two possible causes:

1. You dont have a primary-key for your table
2. You have a primary-key but it's not called id

Solution: As there are two causes, there are also two solutions: 1. Simply create a field id for the table
2. Tell your model about your primary-key: protected $primaryKey = 'your_primary_key';

Please consider following Eloquents model conventions