A website company recently contacted me regarding my new website www.yambaastonmotel.com.au and said they ran it through the HTML checking tool https://validator.w3.org and it has shown many errors. So I ran it and they are correct. Actually it has shown over 100 errors. The company recommend that I fix these errors in code. The problem is I created this without the wix code option in developer tools so all the code was created by the wix editor in the background. Should I be concerned about this validating tool and the amount of errors it has resulted in. The problem is the web developer also contacted my client with these results. Below is a screenshot of the errors. I had never heard of this tool until they sent the email and now I am second guessing whether Wix was the correct website builder to use as I have more clients waiting on sites to be built by me.