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ERROR 10464 --- [nio-8080-exec-6] org.thymeleaf.TemplateEngine
: [THYMELEAF][http-nio-8080-exec-6] Exception processing template
"/productView/productPage": An error happened during template parsing
(template: "class path resource
[templates//productView/productPage.html]")

org.thymeleaf.exceptions.TemplateInputException: An error happened
during template parsing (template: "class path resource
[templates//productView/productPage.html]")


@Controller
public class ProductController {

@Autowired
private ProductService productService;

@GetMapping("productAdmin")
public String next(Model model){
    model.addAttribute("eProduct",new Product());
    return "/adminView/productAdmin";
}

@GetMapping("/productPage")
public String productPage(){
    return "/productView/productPage";
}


@PostMapping("/saveProduct")
public String save(@ModelAttribute("eProduct")  Product product, BindingResult result,
                   @RequestParam("pathImage") MultipartFile multipartFile ){
    String path = System.getProperty("user.home") + File.separator + "projectImages\";

    try {
        multipartFile.transferTo(new File(path + multipartFile.getOriginalFilename()));
    } catch (IOException e) {
        e.printStackTrace();
    }
    product.setPathImage("\images\" + multipartFile.getOriginalFilename());
    productService.save(product);
    return "/mainView/index";
}

@GetMapping("/products")
public String products(Model model){
    model.addAttribute("products",productService.findAll());
    return "/productView/products";
}

@GetMapping("/product-{id}")
public String productPage(@PathVariable("id") int id, Model model){
    Product product = productService.findOne(id);
    model.addAttribute("product",product);
    return "/productView/productPage";
}

}

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
 <head>
<meta charset="UTF-8"/>
<title>Title</title>
</head>
<body>
 Product Page
<p><span th:text="${product.productName}"/></p>
</body>
</html>