Not being able to deploy on vercel

> Build error occurred
17:10:04.188 Error: You cannot define a route with the same specificity as a optional catch-all route ("/" and "/[[...catchall]]").
17:10:04.189 at UrlNode._smoosh (/vercel/path0/node_modules/next/dist/shared/lib/router/utils/sorted-routes.js:36:23)
17:10:04.189 at UrlNode.smoosh (/vercel/path0/node_modules/next/dist/shared/lib/router/utils/sorted-routes.js:11:21)
17:10:04.189 at Object.getSortedRoutes (/vercel/path0/node_modules/next/dist/shared/lib/router/utils/sorted-routes.js:161:17)
17:10:04.190 at /vercel/path0/node_modules/next/dist/build/index.js:360:50
17:10:04.191 at Span.traceFn (/vercel/path0/node_modules/next/dist/trace/trace.js:72:20)
17:10:04.191 at /vercel/path0/node_modules/next/dist/build/index.js:359:89
17:10:04.191 at async Span.traceAsyncFn (/vercel/path0/node_modules/next/dist/trace/trace.js:79:20)
17:10:04.191 at async Object.build [as default] (/vercel/path0/node_modules/next/dist/build/index.js:73:29)
17:10:04.216 Error: Command "npm run build" exited with 1
17:10:04.451 BUILD_UTILS_SPAWN_1: Command "npm run build" exited with 1

Please see the note on this in the quickstart: