Sharepoint Expert Needed - Today to fix small issue

I need a sSharepoint expert to help me resolve a 'Page not loading' error on my Sharepoint site.

The error is as follows:

Sorry, something went wrong
One of the properties of the Web Part has an incorrect format. Microsoft SharePoint Foundation cannot deserialize the Web Part. Check the format of the properties and try again.

I will give you access to the server via Anydesk. If possible can you fix this asap tonight for me.

Specific Tasks:
- Investigate and identify the root cause of the 'Page not loading' issue
- Develop and implement a solution to fix the error

Ideal Skills and Experience:
- Proficient in Sharepoint site development and customization
- Extensive experience in troubleshooting and resolving Sharepoint errors
- Strong problem-solving skills and attention to detail

Please note that I have already tried basic troubleshooting steps like clearing browser cache and cookies. The successful candidate should be able to quickly diagnose the issue and provide a reliable solution.

Budget is 7000 INR for this fix