| 1 | <?php | ||
| 3 | class DynamicContentBlockDataExtension extends DataExtension | ||
| 4 | { | ||
| 5 | /** | ||
| 6 | * @var array | ||
| 7 | */ | ||
| 8 | private static $db = array( | ||
| 9 | 'SubTitle' => 'Varchar(255)', | ||
| 10 | ); | ||
| 11 | |||
| 12 | /** | ||
| 13 | * @var array | ||
| 14 | */ | ||
| 15 | private static $has_one = array( | ||
| 16 | 'Image' => 'Image', | ||
| 17 | 'BlockLink' => 'Link', | ||
| 18 | ); | ||
| 19 | |||
| 20 | /** | ||
| 21 | * @param FieldList $fields | ||
| 22 | */ | ||
| 23 | 1 | public function updateCMSFields(FieldList $fields) | |
| 37 | |||
| 38 | } | 
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: