Getting an Error - React.Children.only expected to receive a single React element child

Getting an Error as Error: React.Children.only expected to receive a single React element child.

While Integrating Internet Identity on Next.

Here’s the layout.tsx file

import { Analytics } from '@vercel/analytics/react'
import { cn } from '@/lib/utils'
import { TailwindIndicator } from '@/components/tailwind-indicator'
import { Providers } from '@/components/providers'
import { Header } from '@/components/header'
import { Toaster } from '@/components/ui/sonner'
import { KasadaClient } from '@/lib/kasada/kasada-client'
import { IdentityProvider } from '../context/AppContext'

export const metadata = {
  metadataBase: new URL('https://gemini.vercel.ai'),
  title: {
    default: 'abc',
    template: ``
  },
  description:
    'xyz',
  icons: {
    icon: '/favicon.ico',
    shortcut: '/favicon-16x16.png',
    apple: '/apple-touch-icon.png'
  }
}

export const viewport = {
  themeColor: [
    { media: '(prefers-color-scheme: light)', color: 'white' },
    { media: '(prefers-color-scheme: dark)', color: 'black' }
  ]
}

interface RootLayoutProps {
  children: React.ReactNode
}

export default function RootLayout({ children }: RootLayoutProps) {
  return (
    <html lang="en" suppressHydrationWarning>
      <body
        className={cn(
          'font-sans antialiased',
          GeistSans.variable,
          GeistMono.variable
        )}
      >
        <IdentityProvider>
          <KasadaClient />
          <Toaster position="top-center" />
          <Providers
            attribute="class"
            defaultTheme="system"
            enableSystem
            disableTransitionOnChange
          >
          
            <div className="flex flex-col min-h-screen bg-black">
            
              <Header />
              <main className="flex flex-col flex-1">{children}</main>
            
            </div>
            <TailwindIndicator />
          </Providers>
          <Analytics />
        </IdentityProvider>
      </body>
    </html>
  )
}

Providers.tsx file

'use client'

import * as React from 'react'
 import { ThemeProvider as NextThemesProvider } from 'next-themes'
import { ThemeProviderProps } from 'next-themes/dist/types'
import { SidebarProvider } from '@/lib/hooks/use-sidebar'
import { TooltipProvider } from '@/components/ui/tooltip'

export function Providers({ children, ...props }: ThemeProviderProps) {
  return (
    <NextThemesProvider {...props}>
      <SidebarProvider>
        <TooltipProvider>{children}</TooltipProvider>
      </SidebarProvider>
    </NextThemesProvider>
  )
}

Been stuck here for long. Can anybody help?
Thanking you in advance