Welcome to the Netlify Forums. Sorry you are having trouble with your build.
This Support Guide contains a ton of useful debugging tips that can likely help you solve your problem Please start by walking through the steps outlined, as well as looking at the relavent guides that are linked in it.
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!
If you are still having problems, please provide as much information as you can on what you have already tried, what your build settings are, your
package.json, etc. Thanks!