Special characters difference XAMPP and NGINX

Question

Well I am migrating a system that is running in the xampp to the Nginx,

only that the special characters in xampp works normal, but in error Nginx,

some hint to solve this problem, the php of xampp and 7.2.5, and the php of Nginx and 7.3.5

the default charset of the 2 servers is UTF-8

someone’s been through this trouble?

the error that appears in the api:

{
    "message": "Slim Application Error",
    "exception": [
        {
            "type": "RuntimeException",
            "code": 5,
            "message": "Malformed UTF-8 characters, possibly incorrectly encoded",
            "file": "\/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/vendor\/slim\/slim\/Slim\/Http\/Response.php",
            "line": 353,
            "trace": [
                "#0 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/index.php(693): Slim\\Http\\Response->withJson(Array, 300)",
                "#1 [internal function]: Closure->{closure}(Object(Slim\\Http\\Request), Object(Slim\\Http\\Response), Array)",
                "#2 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/vendor\/slim\/slim\/Slim\/Handlers\/Strategies\/RequestResponse.php(41): call_user_func(Object(Closure), Object(Slim\\Http\\Request), Object(Slim\\Http\\Response), Array)",
                "#3 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/vendor\/slim\/slim\/Slim\/Route.php(335): Slim\\Handlers\\Strategies\\RequestResponse->__invoke(Object(Closure), Object(Slim\\Http\\Request), Object(Slim\\Http\\Response), Array)",
                "#4 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/classes\/gastroz.class.php(140): Slim\\Route->__invoke(Object(Slim\\Http\\Request), Object(Slim\\Http\\Response))",
                "#5 [internal function]: Auth->__invoke(Object(Slim\\Http\\Request), Object(Slim\\Http\\Response), Object(Slim\\Route))",
                "#6 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/vendor\/slim\/slim\/Slim\/DeferredCallable.php(43): call_user_func_array(Object(Auth), Array)",
                "#7 [internal function]: Slim\\DeferredCallable->__invoke(Object(Slim\\Http\\Request), Object(Slim\\Http\\Response), Object(Slim\\Route))",
                "#8 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/vendor\/slim\/slim\/Slim\/MiddlewareAwareTrait.php(70): call_user_func(Object(Slim\\DeferredCallable), Object(Slim\\Http\\Request), Object(Slim\\Http\\Response), Object(Slim\\Route))",
                "#9 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/vendor\/slim\/slim\/Slim\/MiddlewareAwareTrait.php(117): Slim\\Route->Slim\\{closure}(Object(Slim\\Http\\Request), Object(Slim\\Http\\Response))",
                "#10 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/vendor\/slim\/slim\/Slim\/Route.php(313): Slim\\Route->callMiddlewareStack(Object(Slim\\Http\\Request), Object(Slim\\Http\\Response))",
                "#11 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/vendor\/slim\/slim\/Slim\/App.php(513): Slim\\Route->run(Object(Slim\\Http\\Request), Object(Slim\\Http\\Response))",
                "#12 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/vendor\/slim\/slim\/Slim\/MiddlewareAwareTrait.php(117): Slim\\App->__invoke(Object(Slim\\Http\\Request), Object(Slim\\Http\\Response))",
                "#13 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/vendor\/slim\/slim\/Slim\/App.php(406): Slim\\App->callMiddlewareStack(Object(Slim\\Http\\Request), Object(Slim\\Http\\Response))",
                "#14 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/vendor\/slim\/slim\/Slim\/App.php(314): Slim\\App->process(Object(Slim\\Http\\Request), Object(Slim\\Http\\Response))",
                "#15 \/usr\/local\/nginx\/html\/pHpServer-ADm\/api\/index.php(4296): Slim\\App->run()",
                "#16 {main}"
            ]
        }
    ]
}