I am looking to hire an expert in Javascript to troubleshoot a critical failure in a Python/Selenium script. ================ The Problem =================== The script automates a multi-step web form. All steps (e.g., dropdowns, text entry, file uploads) work perfectly until the final "Submit" button. When the "Submit" button is activated, the page fails to navigate to the next step. This is not a simple "element not found" or "element not clickable" issue. The core of the problem is this: The script's "click" works (e.g., ActionChains, requestSubmit()). However, even if a human manually clicks the same button inside the browser launched by Selenium, it also fails. The form only works when used in a normal, manually-opened browser (not launched by Selenium). This initial failure leads to a fatal Uncaught TypeError (specifically, Cannot read properties of undefined (reading 'push') or ...reading 'length') the moment "Submit" is clicked. This error crashes the submit event handler and stops the navigation. ============ What I have tried so far ========== 1) Click Variations: element.click(), JavaScript clicks, ActionChains, and form.requestSubmit() all fail. 2) Standard Options: Using common flags (e.g., --disable-blink-features=AutomationControlled) is not sufficient. 3) Basic Script Injection: Injecting simple JavaScript stubs (like window.amplitude = {}) ========== So I need someone who has vast experience in automation through Selenium and knows exactly what the issue is. To make sure you didn't RANDOMLY apply to this project write the word "ESTROGEN" at the top of your text. (don't use automatic text proposal offered by freelancer)