Title says the error, it prevents authenticating with Guilded. I was going to make a PR but I've changed the paths in a previous commit for my fork already, so here's the commit I wrote to fix it if you're willing to git cherry-pick it: JoshuaDoes@9179453
It also contains a fix for anyone trying to use the library without go.mod support in their projects since the validator package doesn't truly have a /v10 folder, and although this would result in using v9 instead because the master branch tracks v9, no regressions have been found so far. I'm sure validator will track v10 when it's ready for master, but I can amend the commit if needed.