TypeError: Failed to execute 'setRequestHeader' on 'XMLHttpRequest': Value is not a valid ByteString

mounted(){
          axios
           .get('https://api.omni.chat/v1/chats?order=-createdAt&limit=10', {
              headers: {
                'x-api-key': 'key',
                'x-api-secret': 'key',
                'Content-Type': 'application/json',
                "Accept": "application/json"
              }
              
            })
            .then(response => {
              console.log(response.data)
            })
            .catch((error) => {
              console.log(error)
           })
        },