Script failed to execute, after the code has already ran

Hello everyone, I was hoping someone would be able to explain why I am getting this error after the code has completed.

My issue is that, the code below runs just fine, but after it is executed it still throws an error.

My Code:

this.emailSleep = setTimeout(() => {

        if(this.browser != null) {

            this.browser.webContents.executeJavaScript(`document.getElementById("identifierId").value = "${account.email}"`)

                        .then(() => {console.log("finished 1")})

                        .catch((err) => {console.log("error1", err)})

        }

      }, 2 * 1000)

Error:
[1] error1 Error: Script failed to execute, this normally means an error was thrown. Check the renderer console for the error.
[1] at WebFrame…/lib/renderer/api/web-frame.ts.WebFrame. [as executeJavaScript] (electron/js2c/renderer_init.js:1606:33)
[1] at electron/js2c/renderer_init.js:2862:43
[1] at EventEmitter. (electron/js2c/renderer_init.js:2435:57)
[1] at EventEmitter.emit (events.js:210:5)
[1] at Object.onMessage (electron/js2c/renderer_init.js:2204:16)

What error is showing in the render process console?