can you provide more details such as the site name/id or slug on the account? And a link to the most recent build log would be great.
I also encourage you to checkout this Support Guide which contains a ton of useful debugging tips that can likely help you solve your problem 
Additionally, this Support Guide houses all of our resources for debugging build and deploy issues.
We also recommend trying to search the forums with the build error you encountered - it’s likely your question was already asked by someone else!