Helo! I have a small problem with this interface:

interface Template {
  from_name: string;
  to_name: string;
  fullName: string;
  company: string;
  email: string;
  msg: string;
}

and I will use this here:

const onSubmit: SubmitHandler<IFormInput> = (data) => {
    let serviceId: any = process.env.REACT_APP_SERVICE_ID;
    let templateId: any = process.env.REACT_APP_TEMPLATE_ID;
    let userID: any = process.env.REACT_APP_USER_ID;

    let templateParams: Template = {
      from_name: "Contact Mailer",
      to_name: `${process.env.REACT_APP_TO_EMAIL}`,
      fullName: `${data.fullName}`,
      company: `${data.company}`,
      email: `${data.email}`,
      msg: `${data.message}`,
    };

    emailjs
      .send(`${serviceId}`, `${templateId}`, templateParams, `${userID}`)
      .then(
        function (response) {
          response.status ? setOpenSucces(true) : setOpenFail(true);
        },
        function (error) {
          setOpenFail(true);
          console.log("FAILED...", error);
        }
      )
      .catch((err) => {
        setOpenFail(true);
        console.log(err);
      });
  };

Returns me an error:

Unable to assign an argument of type "Template" to a parameter of type "Record<string, unknown>". No index signature for type "string" in type "Template".ts(2345)

What am I doing wrong?