fix "Converting circular structure to JSON" error

src/errors/NlicError.js

@@ -10,4 +10,23 @@ export default class NlicError extends Error {
         this.isNlicError = true;
         this.isAxiosError = true;
     }
+
+    toJSON() {
+        return {
+            // Standard
+            message: this.message,
+            name: this.name,
+            // Microsoft
+            description: this.description,
+            number: this.number,
+            // Mozilla
+            fileName: this.fileName,
+            lineNumber: this.lineNumber,
+            columnNumber: this.columnNumber,
+            stack: this.stack,
+            // Axios
+            config: this.config,
+            code: this.code,
+        };
+    }
 }