issue while setting up the project

[Shashivarunreddy]

./content/docs/registry/registry-json.mdx
Error evaluating Node.js code
Error: Invalid element at key "links": expected a Zod schema
[at file:///S:/v4/node_modules/.pnpm/[email protected]/node_modules/zod/v4/core/schemas.js:683:23]
[at get value (file:///S:/v4/node_modules/.pnpm/[email protected]/node_modules/zod/v4/core/util.js:33:31)]
[at inst.zod.parse (file:///S:/v4/node_modules/.pnpm/[email protected]/node_modules/zod/v4/core/schemas.js:757:39)]
[at file:///S:/v4/node_modules/.pnpm/[email protected]/node_modules/zod/v4/core/parse.js:47:30]
[at Object.validate (file:///S:/v4/node_modules/.pnpm/[email protected]/node_modules/zod/v4/core/schemas.js:93:24)]
[at validate (file:///S:/v4/node_modules/.pnpm/[email protected][email protected][email protected]@types[email protected]_next@15.3.1_@babel+h76gchlkr5fx6j2u5ceydxaipq/node_modules/fumadocs-mdx/dist/chunk-ZOWJF3OH.js:45:46)]
[at Object.loader (file:///S:/v4/node_modules/.pnpm/[email protected][email protected][email protected]@types[email protected]_next@15.3.1_@babel+_h76gchlkr5fx6j2u5ceydxaipq/node_modules/fumadocs-mdx/dist/loader-mdx.js:45:20)]

The above error keeps popping up while i try to set up v4 version locally , for my understanding the issue is with the Zod schema and the MDX fromat , we cant change the format of all the MDX files , i have tried changing the zod tyes in the source.config.ts file

export const docs = defineDocs({
dir: "content/docs",
docs: {
// @ts-expect-error - TODO: fix the type.
schema: frontmatterSchema.extend({
links: z
.object({
doc: z.string().optional(),
api: z.string().optional(),
})
.optional(),
}),
},
})

but i am unable to find the solution