"Grammar errors" refer to mistakes or incorrect usage of grammar rules when speaking or writing. It means that the sentence or text contains mistakes in things like sentence structure, verb tenses, punctuation, or word order. Full definition
The document has to be perfect and the only way to make sure that it reads well is to remove any instance of grammar error by proofreading. (template.net)
You can not afford to have typos or grammar errors in your resume. (uptowork.com)
Just because you are in IT does not mean you can have spelling or grammar errors on your resume. (thebalance.com)