Error: [serializr] expected modelSchema, got undefined

[divyam234]

Always getting this error even after enabling decorator in tsconfig

export class FileIn {
    @serializable
    name: string

    @serializable
    type: string

    @serializable
    mime_type: string

    @serializable
    path?: string
}

This is my schema and when I call this deserialize(FileIn,body) it immediately throws error