Warning: Undefined variable $_v0 since 3.15

[lpotherat]

Hi,

Since twig 3.15, the base layout of easyadmin ( vendor/easycorp/easyadmin-bundle/templates/layout.html.twig ) triggers a warning at line 108 of the template : {{ item.label|trans }} .

The warning tells that the $_v0 variable is undefined in the compiled version of the twig template, here is the line :

// line 108
yield "                                        ";
yield $this->env->getRuntime('Twig\Runtime\EscaperRuntime')->escape($this->extensions['Symfony\Bridge\Twig\Extension\TranslationExtension']->trans(CoreExtension::getAttribute($this->env, $this->source, $context["item"], "label", [], "any", false, false, false, 108), [], $_v0), "html", null, true);
yield "

And the full function from the compiled template :

// line 96
    /**
     * @return iterable<null|scalar|\Stringable>
     */
    public function block_user_menu(array $context, array $blocks = []): iterable
    {
        $macros = $this->macros;
        $__internal_5a27a8ba21ca79b61932376b2fa922d2 = $this->extensions["Symfony\\Bundle\\WebProfilerBundle\\Twig\\WebProfilerExtension"];
        $__internal_5a27a8ba21ca79b61932376b2fa922d2->enter($__internal_5a27a8ba21ca79b61932376b2fa922d2_prof = new \Twig\Profiler\Profile($this->getTemplateName(), "block", "user_menu"));

        $__internal_6f47bbe9983af81f1e7450e9a3e3768f = $this->extensions["Symfony\\Bridge\\Twig\\Extension\\ProfilerExtension"];
        $__internal_6f47bbe9983af81f1e7450e9a3e3768f->enter($__internal_6f47bbe9983af81f1e7450e9a3e3768f_prof = new \Twig\Profiler\Profile($this->getTemplateName(), "block", "user_menu"));

        // line 97
        yield "                    ";
        if ((Twig\Extension\CoreExtension::length($this->env->getCharset(), CoreExtension::getAttribute($this->env, $this->source, CoreExtension::getAttribute($this->env, $this->source, (isset($context["ea"]) || array_key_exists("ea", $context) ? $context["ea"] : (function () { throw new RuntimeError('Variable "ea" does not exist.', 97, $this->source); })()), "userMenu", [], "any", false, false, false, 97), "items", [], "any", false, false, false, 97)) > 0)) {
            // line 98
            yield "                        <li><hr class=\"dropdown-divider\"></li>
                        ";
            // line 99
            $context['_parent'] = $context;
            $context['_seq'] = CoreExtension::ensureTraversable(CoreExtension::getAttribute($this->env, $this->source, CoreExtension::getAttribute($this->env, $this->source, (isset($context["ea"]) || array_key_exists("ea", $context) ? $context["ea"] : (function () { throw new RuntimeError('Variable "ea" does not exist.', 99, $this->source); })()), "userMenu", [], "any", false, false, false, 99), "items", [], "any", false, false, false, 99));
            $context['loop'] = [
              'parent' => $context['_parent'],
              'index0' => 0,
              'index'  => 1,
              'first'  => true,
            ];
            if (is_array($context['_seq']) || (is_object($context['_seq']) && $context['_seq'] instanceof \Countable)) {
                $length = count($context['_seq']);
                $context['loop']['revindex0'] = $length - 1;
                $context['loop']['revindex'] = $length;
                $context['loop']['length'] = $length;
                $context['loop']['last'] = 1 === $length;
            }
            foreach ($context['_seq'] as $context["_key"] => $context["item"]) {
                // line 100
                yield "                            <li>
                                ";
                // line 101
                if ((CoreExtension::getAttribute($this->env, $this->source, $context["item"], "isMenuSection", [], "any", false, false, false, 101) &&  !CoreExtension::getAttribute($this->env, $this->source, $context["loop"], "first", [], "any", false, false, false, 101))) {
                    // line 102
                    yield "                                    <hr class=\"dropdown-divider\">
                                ";
                } elseif ( !CoreExtension::getAttribute($this->env, $this->source,                 // line 103
$context["item"], "isMenuSection", [], "any", false, false, false, 103)) {
                    // line 104
                    yield "                                    <a href=\"";
                    yield $this->env->getRuntime('Twig\Runtime\EscaperRuntime')->escape(CoreExtension::getAttribute($this->env, $this->source, $context["item"], "linkUrl", [], "any", false, false, false, 104), "html", null, true);
                    yield "\" class=\"dropdown-item user-action ";
                    yield $this->env->getRuntime('Twig\Runtime\EscaperRuntime')->escape(CoreExtension::getAttribute($this->env, $this->source, $context["item"], "cssClass", [], "any", false, false, false, 104), "html", null, true);
                    yield "\"
                                       target=\"";
                    // line 105
                    yield $this->env->getRuntime('Twig\Runtime\EscaperRuntime')->escape(CoreExtension::getAttribute($this->env, $this->source, $context["item"], "linkTarget", [], "any", false, false, false, 105), "html", null, true);
                    yield "\" rel=\"";
                    yield $this->env->getRuntime('Twig\Runtime\EscaperRuntime')->escape(CoreExtension::getAttribute($this->env, $this->source, $context["item"], "linkRel", [], "any", false, false, false, 105), "html", null, true);
                    yield "\"
                                       referrerpolicy=\"origin-when-cross-origin\">
                                        ";
                    // line 107
                    if ( !Twig\Extension\CoreExtension::testEmpty(CoreExtension::getAttribute($this->env, $this->source, $context["item"], "icon", [], "any", false, false, false, 107))) {
                        yield $this->env->getRuntime('Symfony\UX\TwigComponent\Twig\ComponentRuntime')->render("ea:Icon", ["name" => CoreExtension::getAttribute($this->env, $this->source, $context["item"], "icon", [], "any", false, false, false, 107)]);
                    }
                    // line 108
                    yield "                                        ";
                    yield $this->env->getRuntime('Twig\Runtime\EscaperRuntime')->escape($this->extensions['Symfony\Bridge\Twig\Extension\TranslationExtension']->trans(CoreExtension::getAttribute($this->env, $this->source, $context["item"], "label", [], "any", false, false, false, 108), [], $_v0), "html", null, true);
                    yield "
                                    </a>
                                ";
                }
                // line 111
                yield "                            </li>
                        ";
                ++$context['loop']['index0'];
                ++$context['loop']['index'];
                $context['loop']['first'] = false;
                if (isset($context['loop']['revindex0'], $context['loop']['revindex'])) {
                    --$context['loop']['revindex0'];
                    --$context['loop']['revindex'];
                    $context['loop']['last'] = 0 === $context['loop']['revindex0'];
                }
            }
            $_parent = $context['_parent'];
            unset($context['_seq'], $context['_key'], $context['item'], $context['_parent'], $context['loop']);
            $context = array_intersect_key($context, $_parent) + $_parent;
            // line 113
            yield "                    ";
        }
        // line 114
        yield "                ";
        
        $__internal_6f47bbe9983af81f1e7450e9a3e3768f->leave($__internal_6f47bbe9983af81f1e7450e9a3e3768f_prof);

        
        $__internal_5a27a8ba21ca79b61932376b2fa922d2->leave($__internal_5a27a8ba21ca79b61932376b2fa922d2_prof);

        yield from [];
    }

I rolled back to 3.14.2 and all works again.

Thanks

[jdreesen]

Duplicate of #4452?

[xabbuh]

Does #4475 help?

[lpotherat]

Yes, #4452 has the exact same error in one of the comments, the issue title was not meaningful for my use case sorry !
I'm going to test it

[lpotherat]

I'm back, upgrading to "twig/twig": "3.x-dev#c384fb4d8cd4bfbca7a13f9d36e3afb53c4ed655" brings me to a Syntax error :

An exception has been thrown during the compilation of a template ("EmptyNode cannot have children.")

I may not be the same issue ?
Rolling back to 3.14.2 again :)

[xabbuh]

for that you probably need symfony/symfony#58964 (i.e. the latest patch release of symfony/twig-bridge for the Symfony version you are using)

[lpotherat]

I'm currently on 7.2 RC1, I'll wait the next RC to update Twig then

[fabpot]

Closing as this has been fixed already as mentioned above.