diff --git a/changelog.md b/changelog.md
index 4454f5e3..b38ba8e3 100644
--- a/changelog.md
+++ b/changelog.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html)
 
+## [Unreleased]
+
+### Fixed
+
+- Fix some null on manage errors.
+
 ## [0.26.0] - 2024/07/29
 
 ### Added
diff --git a/src/models/ComponentAttribute.js b/src/models/ComponentAttribute.js
index 82a5dfab..82fa49f1 100644
--- a/src/models/ComponentAttribute.js
+++ b/src/models/ComponentAttribute.js
@@ -74,7 +74,7 @@ class ComponentAttribute {
     this.validateRuleValues(errors, id);
     this.validateRuleRegex(errors, id);
 
-    if (recurse && this.definition.type === 'Object' && Array.isArray(this.value)) {
+    if (recurse && this.definition?.type === 'Object' && Array.isArray(this.value)) {
       this.value.forEach((attribute) => attribute.getErrors(errors, true, id));
     }
 
@@ -116,7 +116,7 @@ class ComponentAttribute {
 
     if (this.definition.type !== 'Reference'
       && this.definition.type !== 'Link'
-      && this.definition?.type !== this.type) {
+      && this.definition.type !== this.type) {
       errors.push(new ParserLog({
         componentId: id,
         severity: ParserLog.SEVERITY_ERROR,
@@ -220,14 +220,13 @@ class ComponentAttribute {
    * @returns {ParserLog[]} All attributes error.
    */
   validateRuleMinMax(errors = [], id = null) {
-    if (this.type === 'Boolean' || this.type === 'Object') {
+    if (this.type === 'Boolean' || this.type === 'Object' || !this.definition?.rules) {
       return errors;
     }
 
-    const value = typeof this.value === 'number' ? this.value : this.value.length;
+    const value = typeof this.value === 'number' ? this.value : this.value?.length || 0;
 
-    if (this.definition
-      && this.definition.rules.min !== null
+    if (this.definition.rules.min !== null
       && value < this.definition.rules.min) {
       errors.push(new ParserLog({
         componentId: id,
@@ -238,8 +237,7 @@ class ComponentAttribute {
       }));
     }
 
-    if (this.definition
-      && this.definition.rules.max !== null
+    if (this.definition.rules.max !== null
       && value > this.definition.rules.max) {
       errors.push(new ParserLog({
         componentId: id,
diff --git a/tests/unit/models/ComponentAttribute.spec.js b/tests/unit/models/ComponentAttribute.spec.js
index 52280aba..8c95df8b 100644
--- a/tests/unit/models/ComponentAttribute.spec.js
+++ b/tests/unit/models/ComponentAttribute.spec.js
@@ -119,6 +119,18 @@ describe('Test class: ComponentAttribute', () => {
         attribute: 'child',
       })]);
     });
+
+    it('should not set error without definition', () => {
+      const attribute = new ComponentAttribute({
+        name: 'parent',
+        type: 'String',
+        value: 'test',
+      });
+      const errors = [];
+
+      attribute.getErrors(errors, true);
+      expect(errors).toEqual([]);
+    });
   });
 
   describe('Test method: validateType', () => {
@@ -345,6 +357,23 @@ describe('Test class: ComponentAttribute', () => {
   });
 
   describe('Test method: validateRuleMinMax', () => {
+    it('should not set error without definition', () => {
+      const attribute = new ComponentAttribute({
+        type: 'String',
+      });
+
+      expect(attribute.validateRuleMinMax()).toEqual([]);
+    });
+
+    it('should not set error without rules', () => {
+      const attribute = new ComponentAttribute({
+        type: 'String',
+        definition: new ComponentAttributeDefinition(),
+      });
+
+      expect(attribute.validateRuleMinMax()).toEqual([]);
+    });
+
     it('should not set error with boolean type', () => {
       const attribute = new ComponentAttribute({
         type: 'Boolean',