Laravel : Syntax error or access violation: 1055 Error

Short answer

In config\database.php –> "mysql" array

Set 'strict' => false to disable all.

…. or

You can leave 'strict' => true and add modes to "mysql" option in

'mysql' => [
       ...
       ....
       'strict' => true,
       'modes' => [
            //'ONLY_FULL_GROUP_BY', // Disable this to allow grouping by one column
            'STRICT_TRANS_TABLES',
            'NO_ZERO_IN_DATE',
            'NO_ZERO_DATE',
            'ERROR_FOR_DIVISION_BY_ZERO',
            'NO_AUTO_CREATE_USER',
            'NO_ENGINE_SUBSTITUTION'
        ],
 ]

Detailed answer

You may not need to disable all strict options …
Kindly have a look on this answer about this issue.