Only first element of a form is sent via server action

[NicoCaldo]

I'm playing with Server action and I've noticed that just the first input of the form is sent on the server action. Using the code below, with several FormField, just the one is being sent to the server action

<Form {...form}>
      <form
        action={async (form: FormData) => {
          requestImg(form).then((imageStringify) => {
            const binaryData = Buffer.from(imageStringify.image);
            const imageBase64 = URL.createObjectURL(
              new Blob([binaryData.buffer], { type: "image/jpeg" } /* (1) */)
            );
            setSource(imageBase64);
            setOpen(true);
          });
        }}
        className="w-2/3 space-y-6"
      >

my server action looks like

export const requestImg = async (formData: any) => {
  const link = formData.post_link;

and from the console, I can see

FormData {
  [Symbol(state)]: [
    {
      name: 'post_link',
      value: 'https://abcd.com/2023/12/eric-prydz-call-on-me-beatport/'        
    }
  ]
}

Instead, if I use the example of the documentation

<Form {...form}>
        <form
          onSubmit={form.handleSubmit(onSubmit)}
          className="w-2/3 space-y-6"
        >
          <FormField

and then

function onSubmit(data: z.infer<typeof FormSchema>) {
    requestImg(data).then((imageStringify) => {
      const binaryData = Buffer.from(imageStringify.image);
      console.log(binaryData);
      const imageBase64 = URL.createObjectURL(
        new Blob([binaryData.buffer], { type: "image/jpeg" } /* (1) */)
      );
      setSource(imageBase64);
      setOpen(true);
    });
  }

I've the correct formField

({
  post_link: 'https://abcd.com/2023/12/eric-prydz-call-on-me-beatport/',       
  brightness: 33,
  contrast: 66,
  do_enhance: false,
  title_tag: true
})

[NicoCaldo]

Using ChatGPT for automatic answers don't help.

[shadcn]

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