Backend validation errors are not displayed in Toolkit forms

src/Module/Templates/Toolkit/assets/css/toolkit.css

@@ -133,4 +133,8 @@ div.jsoneditor-tree button.jsoneditor-invisible{
     .has-fixed-sidenav main {
         padding: 0 20px;
     }
+}
+
+.toast-left {
+    left: 100px !important;
 }

src/Module/Templates/Toolkit/src/Views/pages/database/index.php.tpl

@@ -1,5 +1,10 @@
 <div id="database">
     <div class="row">
+
+        <?php if (session()->has('error')): ?>
+            <?php echo partial('partials/messages/error') ?>
+        <?php endif; ?>
+
         <div class="tables col s2">
             <ul class="collection with-header">
                 <li class="collection-header table-header add-table waves-effect create-table">

src/Module/Templates/Toolkit/src/Views/partials/messages/error.php.tpl

@@ -0,0 +1,16 @@
+<?php $error = session()->getFlash('error') ?>
+<?php if ($error): ?>
+    <script>
+        document.addEventListener('DOMContentLoaded', function() {
+            <?php if (is_array($error)): ?>
+                <?php foreach ($error as $field => $messages): ?>
+                    <?php foreach ($messages as $message): ?>
+                        M.toast({html: "<?php echo addslashes($message); ?>", classes: 'red toast-left'});
+                    <?php endforeach; ?>
+                <?php endforeach; ?>
+            <?php else: ?>
+                M.toast({html: "<?php echo addslashes($error); ?>", classes: 'red toast-left'});
+            <?php endif; ?>
+        });
+    </script>
+<?php endif; ?>

src/Module/Templates/Toolkit/src/resources/lang/en/common.php.tpl

@@ -0,0 +1,5 @@
+<?php
+
+return [
+    'table' => 'Table Name',
+];

src/Module/Templates/Toolkit/src/resources/lang/en/validation.php.tpl

@@ -0,0 +1,6 @@
+<?php
+
+return [
+    'nonEmptyJson' => 'The JSON should not be empty.',
+    'uniqueTableName' => 'Table name must be unique.',
+];

src/Module/Templates/Toolkit/src/resources/lang/es/common.php.tpl

@@ -0,0 +1,5 @@
+<?php
+
+return [
+    'table' => 'Nombre de la tabla',
+];

src/Module/Templates/Toolkit/src/resources/lang/es/validation.php.tpl

@@ -0,0 +1,6 @@
+<?php
+
+return [
+    'nonEmptyJson' => 'El JSON no debe estar vacío.',
+    'uniqueTableName' => 'El nombre de la tabla debe ser único.',
+];