ejaculations.sourceはNULL非許容にする

app/Ejaculation.php

@@ -17,7 +17,7 @@ class Ejaculation extends Model
 
     protected $fillable = [
         'user_id', 'ejaculated_date',
-        'note', 'geo_latitude', 'geo_longitude', 'link',
+        'note', 'geo_latitude', 'geo_longitude', 'link', 'source',
         'is_private', 'is_too_sensitive'
     ];