diff --git a/dist/main.cjs b/dist/main.cjs
index 7514e9c..871afe1 100644
--- a/dist/main.cjs
+++ b/dist/main.cjs
@@ -190,10 +190,6 @@ Object.defineProperty(Flatten, 'DP_TOL', {
  * Class of system errors
  */
 class Errors {
-    constructor() {
-        this.dummy = 0;
-    }
-
     /**
      * Throw error ILLEGAL_PARAMETERS when cannot instantiate from given parameter
      * @returns {ReferenceError}
diff --git a/dist/main.mjs b/dist/main.mjs
index 31996c1..ea2f5ec 100644
--- a/dist/main.mjs
+++ b/dist/main.mjs
@@ -186,10 +186,6 @@ Object.defineProperty(Flatten, 'DP_TOL', {
  * Class of system errors
  */
 class Errors {
-    constructor() {
-        this.dummy = 0;
-    }
-
     /**
      * Throw error ILLEGAL_PARAMETERS when cannot instantiate from given parameter
      * @returns {ReferenceError}
diff --git a/dist/main.umd.js b/dist/main.umd.js
index 8e45cad..60aec7c 100644
--- a/dist/main.umd.js
+++ b/dist/main.umd.js
@@ -192,10 +192,6 @@
      * Class of system errors
      */
     class Errors {
-        constructor() {
-            this.dummy = 0;
-        }
-
         /**
          * Throw error ILLEGAL_PARAMETERS when cannot instantiate from given parameter
          * @returns {ReferenceError}
diff --git a/src/utils/errors.js b/src/utils/errors.js
index a70c6c9..e77ca06 100644
--- a/src/utils/errors.js
+++ b/src/utils/errors.js
@@ -8,10 +8,6 @@ import Flatten from "../flatten";
  * Class of system errors
  */
 export class Errors {
-    constructor() {
-        this.dummy = 0
-    }
-
     /**
      * Throw error ILLEGAL_PARAMETERS when cannot instantiate from given parameter
      * @returns {ReferenceError}