Hexo generate encountered a problem Template render error.

  node.js, question

This mistake is very annoying. I uninstalled hexo and reinstalled it. If the new article appears, I don’t know why.
The error message is as follows:
<pre>FATAL Something's wrong. Maybe you can find the solution here:http://hexo.io/docs/troubleshooting.html
Template render error: unknown block tag: ld

at Error.exports.TemplateError (/Users/wsgdrfz/blog/node_modules/nunjucks/src/lib.js:51:19)
 at Object.extend.fail (/Users/wsgdrfz/blog/node_modules/nunjucks/src/parser.js:64:15)
 at Object.extend.parseStatement (/Users/wsgdrfz/blog/node_modules/nunjucks/src/parser.js:544:18)
 at Object.extend.parseNodes (/Users/wsgdrfz/blog/node_modules/nunjucks/src/parser.js:1151:30)
 at Object.extend.parseAsRoot (/Users/wsgdrfz/blog/node_modules/nunjucks/src/parser.js:1177:42)
 at Object.module.exports.parse (/Users/wsgdrfz/blog/node_modules/nunjucks/src/parser.js:1199:18)
 at Object.module.exports.compile (/Users/wsgdrfz/blog/node_modules/nunjucks/src/compiler.js:1118:48)
 at Obj.extend._compile (/Users/wsgdrfz/blog/node_modules/nunjucks/src/environment.js:444:35)
 at Obj.extend.compile (/Users/wsgdrfz/blog/node_modules/nunjucks/src/environment.js:433:18)
 at null.<anonymous> (/Users/wsgdrfz/blog/node_modules/nunjucks/src/environment.js:378:22)
 at Object.exports.withPrettyErrors (/Users/wsgdrfz/blog/node_modules/nunjucks/src/lib.js:24:16)
 at Obj.extend.render (/Users/wsgdrfz/blog/node_modules/nunjucks/src/environment.js:374:20)
 at Obj.extend.renderString (/Users/wsgdrfz/blog/node_modules/nunjucks/src/environment.js:261:21)
 at /Users/wsgdrfz/blog/node_modules/hexo/lib/extend/tag.js:56:9
 at tryCatcher (/Users/wsgdrfz/blog/node_modules/bluebird/js/main/util.js:26:23)
 at Promise._resolveFromResolver (/Users/wsgdrfz/blog/node_modules/bluebird/js/main/promise.js:480:31)
 at new Promise (/Users/wsgdrfz/blog/node_modules/bluebird/js/main/promise.js:70:37)
 at Tag.render (/Users/wsgdrfz/blog/node_modules/hexo/lib/extend/tag.js:55:10)
 at Object.tagFilter [as onRenderEnd] (/Users/wsgdrfz/blog/node_modules/hexo/lib/hexo/post.js:253:16)
 at /Users/wsgdrfz/blog/node_modules/hexo/lib/hexo/render.js:55:19
 at tryCatcher (/Users/wsgdrfz/blog/node_modules/bluebird/js/main/util.js:26:23)
 at Promise._settlePromiseFromHandler (/Users/wsgdrfz/blog/node_modules/bluebird/js/main/promise.js:507:31)
 at Promise._settlePromiseAt (/Users/wsgdrfz/blog/node_modules/bluebird/js/main/promise.js:581:18)
 at Promise._settlePromises (/Users/wsgdrfz/blog/node_modules/bluebird/js/main/promise.js:697:14)
 at Async._drainQueue (/Users/wsgdrfz/blog/node_modules/bluebird/js/main/async.js:123:16)
 at Async._drainQueues (/Users/wsgdrfz/blog/node_modules/bluebird/js/main/async.js:133:10)
 at Immediate.Async.drainQueues [as _onImmediate] (/Users/wsgdrfz/blog/node_modules/bluebird/js/main/async.js:15:14)
 at processImmediate [as _immediateCallback] (timers.js:383:17)
 </pre><code>
Template render error: unknown block tag: ld

Does your MD file exist in insideldThis label?