Script to show attachment filename stops email sending but goes to redirect

[jamiematrix]

Description

I have a little script to show the customer the filename of the attachment they have chosen:

{% js %}
    document.querySelector("#CV").onchange = function(){
        document.querySelector("#CVLabel").textContent = `${this.files[0].name} selected`;
    }
{% endjs %}

When this script is on the page the contact form fails to send if an attachment is present, but redirects to a thank-you page without issue.

Steps to reproduce

1. Add the above script to the contact form
2. Send email with attachment

Additional info

• Craft version: 3.7.38
• PHP version: 7.4.30
• Database driver & version: MySQL 5.7
• Plugins & versions: Contact Form 2.3.0, Contact Form Extensions 1.2.8

[i-just]

Hi, thanks for reaching out. I can’t quite replicate this issue by just adding the JS you posted. I can, however, replicate it if I intentionally trigger an error in the email template I specify via the Contact Form Extensions plugin settings (e.g. try to print out a variable that doesn’t exist). Is there anything in the logs that would suggest what the problem is? Logs to have a look at are: storage/logs/web.log and also your system’s email logs

[i-just]

Closing due to inactivity. If this is still a problem, please provide the requested details, and we’ll pick it up again.