Where can I find the Javascript file for a page returned by uri?

Question

In my app, we have a 'sign in' button in Page 1, which will direct to the actual sign in page.

So when it is clicked, it sends a request to the server, and the server returns a uri.

Then the page is rendered. I will call this Page 2.

This page 2 has email, password input fields, and continue button.

Now, I need to figure out where the continue button is sending the POST request to, so I need access to the Javascript file of this page 2 rendered by the uri.

When I goto Sources tab however, I do not see any Javascript files.

All I see is the image below

Where can I access the file?

I have searched the server repo as well for the frontend code of the uri returned, but could not find.

There is nothing logged in the Networks tab as well, when I enter email, password, and click continue on page 2 to log in.

EDIT:

I have looked at the 'Element tab' for Page 2. This is the html code for the form (email , password, continue button). Note that I changed some attributes to camelCase.

 <form
                    method="POST"
                    className="c2d54d3ec c0a5e167e"
                    
                  >
                    <input
                      type="hidden"
                      name="state"
                      value="asdasdasdasdasdaIDELETEDTHIS33322E5yb0g"
                    />

                    <div className="cfb71d41a c9514219f">
                      <div className="cafdaf6cc">
                        <div className="input-wrapper _input-wrapper">
                          <div
                            className="cdaa5633a c2ff41511 text c083604f6 c8c2b35f6"
                            data-action-text=""
                            data-alternate-action-text=""
                          >
                            <label
                              className="c2b602944 no-js cac31896e c7e047387"
                              htmlFor="username"
                            >
                              Email address
                            </label>

                            <input
                              className="input cab61d8c8 c4c289c94"
                              inputMode="email"
                              name="username"
                              id="username"
                              type="text"
                              //   value=""
                              required={true}
                              autoComplete="username"
                              autoCapitalize="none"
                              spellCheck="false"
                              autoFocus={true}
                            />

                            <div
                              className="c2b602944 js-required cac31896e c7e047387"
                              data-dynamic-label-for="username"
                              aria-hidden="true"
                            >
                              Email address
                            </div>
                          </div>
                        </div>

                        <div className="input-wrapper _input-wrapper">
                          <div
                            className="cdaa5633a c2ff41511 password cbe83985a c8c2b35f6"
                            data-action-text=""
                            data-alternate-action-text=""
                          >
                            <label
                              className="c2b602944 no-js cac31896e cbef58c3b"
                              htmlFor="password"
                            >
                              Password
                            </label>

                            <input
                              className="input cab61d8c8 cbcf0d22b"
                              name="password"
                              id="password"
                              type="password"
                              required={true}
                              autoComplete="current-password"
                              autoCapitalize="none"
                              spellCheck="false"
                            />

                            <div
                              className="c2b602944 js-required cac31896e cbef58c3b"
                              data-dynamic-label-for="password"
                              aria-hidden="true"
                            >
                              Password
                            </div>

<div className="c31e91fde">
                      <button
                        type="submit"
                        name="action"
                        value="default"
                        className="c55316539 c8538d135 ca2869ec9 c448bcaa9 c9774d53b"
                      >
                        Continue
                      </button>
                    </div>