Crash report: `Error: Unsupported chain ID`

URL

https://app.uniswap.org/#/pool/1?chain=mainnet

Error

Error: Unsupported chain ID

Stacktrace

Error: Unsupported chain ID
    at n.get (https://app.uniswap.org/static/js/main.355ff957.chunk.js:1:539930)
    at ap (https://app.uniswap.org/static/js/main.355ff957.chunk.js:1:342725)
    at fa (https://app.uniswap.org/static/js/2.cdb10fed.chunk.js:2:2754298)
    at za (https://app.uniswap.org/static/js/2.cdb10fed.chunk.js:2:2763865)
    at Yf (https://app.uniswap.org/static/js/2.cdb10fed.chunk.js:2:2807589)
    at Cs (https://app.uniswap.org/static/js/2.cdb10fed.chunk.js:2:2793839)
    at Ts (https://app.uniswap.org/static/js/2.cdb10fed.chunk.js:2:2793767)
    at As (https://app.uniswap.org/static/js/2.cdb10fed.chunk.js:2:2793630)
    at ws (https://app.uniswap.org/static/js/2.cdb10fed.chunk.js:2:2790596)
    at https://app.uniswap.org/static/js/2.cdb10fed.chunk.js:2:2740090

Device data

{
  "ua": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.88 Safari/537.36",
  "browser": {
    "name": "Chrome",
    "version": "100.0.4896.88",
    "major": "100"
  },
  "engine": {
    "name": "Blink",
    "version": "100.0.4896.88"
  },
  "os": {
    "name": "Linux",
    "version": "x86_64"
  },
  "device": {},
  "cpu": {
    "architecture": "amd64"
  }
}

Start by reproducing https://app.uniswap.org/#/pool/1?chain=mainnet with the reported Chrome/Linux environment and inspect the application source corresponding to the deployed stack trace. Trace where the unsupported chain ID is produced; done means the pool URL no longer crashes and the correct chain is handled or an understandable error is shown.