Application Error

Error: ENOENT: no such file or directory, open '/app/contents/blog/component-demo/index.mdx'
    at Object.openSync (node:fs:600:3)
    at Object.readFileSync (node:fs:468:35)
    at getMDXRawFileByFolder (/app/build/index.js:4756:158)
    at getPostBySlug (/app/build/index.js:4808:16)
    at loader5 (/app/build/index.js:4971:47)
    at Object.callRouteLoaderRR (/app/node_modules/.pnpm/@remix-run+server-runtime@1.11.1_biqbaboplfbrettd7655fr4n2y/node_modules/@remix-run/server-runtime/dist/data.js:41:22)
    at handler (/app/node_modules/.pnpm/@remix-run+server-runtime@1.11.1_biqbaboplfbrettd7655fr4n2y/node_modules/@remix-run/server-runtime/dist/routes.js:34:50)
    at callLoaderOrAction (/app/node_modules/.pnpm/@remix-run+router@1.3.0/node_modules/@remix-run/router/router.ts:3064:7)
    at /app/node_modules/.pnpm/@remix-run+router@1.3.0/node_modules/@remix-run/router/router.ts:2719:9
    at Array.map (<anonymous>)