[EE4] Fluid field throws error in publish page

Error: Call to undefined method stdClass::_init() in /var/www/html/system/ee/legacy/libraries/api/Api_channel_fields.php on line 343
Call Stack
# Time Memory Function Location
1 0.0040 365072 {main}( ) .../admin.php:0
2 0.0715 366952 require_once( '/var/www/html/system/ee/EllisLab/ExpressionEngine/Boot/boot.php' ) .../admin.php:147
3 0.0888 476816 EllisLab\ExpressionEngine\Core\Core->run( ??? ) .../boot.php:146
4 0.1031 571136 EllisLab\ExpressionEngine\Core\Core->runController( ??? ) .../Core.php:109
5 0.6577 2837616 call_user_func_array:{/var/www/html/system/ee/EllisLab/ExpressionEngine/Core/Core.php:229} ( ???, ??? ) .../Core.php:229
6 0.6577 2838008 EllisLab\ExpressionEngine\Controller\Publish\Publish->create( ???, ??? ) .../Core.php:229
7 0.9183 3574136 Cp->render( ???, ???, ??? ) .../Publish.php:298
8 0.9588 3636136 View->render( ???, ???, ??? ) .../Cp.php:252
9 0.9602 3658856 EllisLab\ExpressionEngine\Service\View\View->render( ??? ) .../View.php:39
10 0.9606 3661584 EllisLab\ExpressionEngine\Service\View\View->parse( ???, ??? ) .../View.php:98
11 0.9616 3678936 include( '/var/www/html/system/ee/EllisLab/ExpressionEngine/View/publish/entry.php' ) .../View.php:133
12 1.3765 4265736 EllisLab\ExpressionEngine\Model\Content\Display\FieldDisplay->getForm( ) .../entry.php:84
13 1.3765 4265736 EllisLab\ExpressionEngine\Model\Content\FieldFacade->getForm( ) .../FieldDisplay.php:69
14 1.3838 4266112 Api_channel_fields->apply( ???, ??? ) .../FieldFacade.php:218
15 1.3980 4267920 EE_Fieldtype->display_publish_field( ??? ) .../Api_channel_fields.php:402
16 1.3980 4267920 Fluid_field_ft->display_field( ??? ) .../EE_Fieldtype.php:325
17 1.4075 4290672 EllisLab\ExpressionEngine\Service\View\View->render( ??? ) .../ft.fluid_field.php:351
18 1.4081 4290768 EllisLab\ExpressionEngine\Service\View\View->parse( ???, ??? ) .../View.php:98
19 1.4106 4307768 include( '/var/www/html/system/ee/EllisLab/Addons/fluid_field/views/field.php' ) .../View.php:133
20 1.4111 4307768 EllisLab\ExpressionEngine\Model\Content\FieldFacade->getForm( ) .../field.php:18
21 1.4111 4307768 EllisLab\ExpressionEngine\Model\Content\FieldFacade->initField( ) .../FieldFacade.php:214
22 1.4111 4310816 Api_channel_fields->setup_handler( ???, ??? ) .../FieldFacade.php:354