Q：

hexo g
YAMLException: Specified list of YAML types (or a single Type object) contains a non-Type object.
    at /home/noraj/Dev/hackdoc/node_modules/hexo/node_modules/js-yaml/lib/schema.js:104:13
    at Array.forEach (<anonymous>)
    at Schema.extend (/home/noraj/Dev/hackdoc/node_modules/hexo/node_modules/js-yaml/lib/schema.js:102:12)
    at Object.<anonymous> (/home/noraj/Dev/hackdoc/node_modules/hexo/lib/plugins/renderer/yaml.js:5:36)
    at Module._compile (node:internal/modules/cjs/loader:1097:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1151:10)
    at Module.load (node:internal/modules/cjs/loader:975:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Module.require (node:internal/modules/cjs/loader:999:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at module.exports (/home/noraj/Dev/hackdoc/node_modules/hexo/lib/plugins/renderer/index.js:15:16)
    at Hexo.init (/home/noraj/Dev/hackdoc/node_modules/hexo/lib/hexo/index.js:235:35)
    at /home/noraj/.asdf/installs/nodejs/17.5.0/.npm/lib/node_modules/hexo-cli/lib/hexo.js:49:17
    at tryCatcher (/home/noraj/.asdf/installs/nodejs/17.5.0/.npm/lib/node_modules/hexo-cli/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/home/noraj/.asdf/installs/nodejs/17.5.0/.npm/lib/node_modules/hexo-cli/node_modules/bluebird/js/release/promise.js:547:31)
    at Promise._settlePromise (/home/noraj/.asdf/installs/nodejs/17.5.0/.npm/lib/node_modules/hexo-cli/node_modules/bluebird/js/release/promise.js:604:18)
    at Promise._settlePromise0 (/home/noraj/.asdf/installs/nodejs/17.5.0/.npm/lib/node_modules/hexo-cli/node_modules/bluebird/js/release/promise.js:649:10)
    at Promise._settlePromises (/home/noraj/.asdf/installs/nodejs/17.5.0/.npm/lib/node_modules/hexo-cli/node_modules/bluebird/js/release/promise.js:729:18)
    at _drainQueueStep (/home/noraj/.asdf/installs/nodejs/17.5.0/.npm/lib/node_modules/hexo-cli/node_modules/bluebird/js/release/async.js:93:12)
    at _drainQueue (/home/noraj/.asdf/installs/nodejs/17.5.0/.npm/lib/node_modules/hexo-cli/node_modules/bluebird/js/release/async.js:86:9)
    at Async._drainQueues (/home/noraj/.asdf/installs/nodejs/17.5.0/.npm/lib/node_modules/hexo-cli/node_modules/bluebird/js/release/async.js:102:5)
    at Immediate.Async.drainQueues [as _onImmediate] (/home/noraj/.asdf/installs/nodejs/17.5.0/.npm/lib/node_modules/hexo-cli/node_modules/bluebird/js/release/async.js:15:14) {
  reason: 'Specified list of YAML types (or a single Type object) contains a non-Type object.',
  mark: undefined
}

Solve:

npm i hexo@6.0.0

解答来源：issues/4917

大概就算hexo版本不符，而且通过一般教程的重装hexo无法解决