Possible solutions for Laravel Livewire error after sending data on PHP 7.4 server

Uncaught (in promise) SyntaxError: Unexpected end of JSON input at JSON.parse ()

https://drive.google.com/file/d/1twc5gKGQAETPVT4oSukLppzT9DVgYbod/view?usp=share_link

I received this erros on the server where I deployed the project.
Php 7.4.
I have the same on my dev. server. There os no error.
I have the same on another server , There os no error..
The error is appering after the first update of the field value by Livewire. (sending data)
After it JS Error -> noting to do after.

I don’t have any ide how and where to start the investigation.
Thanks
Gergely

1- php artisan optimize:clear
2- clear vendor && composer install
3- take a copy from success version on another server , same error.
4- add “@php artisan vendor:publish –force –tag=livewire:assets –ansi” to composer.json