It sounds like you're encountering a technical issue with the website. While I can't directly edit the site, I recommend reaching out to the customer support team of Handyman.com. They should be able to assist you with correcting the error you're seeing when posting a new project.
In the meantime, if you're looking to get started on a home improvement project, consider gathering details about what you need done. This will help when you do connect with support or if you decide to post your project again.
If your project involves electrical, gas, structural, or HVAC work, make sure to hire licensed professionals for safety and compliance. Typical costs for projects can vary widely depending on your location, but for example, hiring a licensed electrician can range from $50 to $100 per hour.
As a next step, I suggest contacting Handyman.com support to report the issue. They can guide you through the process and help you get back on track with your project posting.
— Assisted answer