When I run example/run.ts, it prompts Non-base58 character

[gphp0071201]

Error: Non-base58 character
at Object.decode (D:\work\servers\local-wallet\node_modules.pnpm\base-x@3.0.9\node_modules\base-x\src\index.js:111:11)
at Object.decode (D:\work\servers\local-wallet\node_modules.pnpm\bs58check@2.1.2\node_modules\bs58check\base.js:39:25)
at Object.decode (D:\work\servers\local-wallet\node_modules.pnpm\wif@2.0.6\node_modules\wif\index.js:43:30)
at Object.fromWIF (D:\work\servers\local-wallet\node_modules.pnpm\ecpair@2.1.0\node_modules\ecpair\src\ecpair.js:36:25)
at new Wallet (D:\work\servers\local-wallet\src\index.ts:22:28)
at D:\work\servers\local-wallet\example\run.ts:7:20
at Generator.next ()
at D:\work\servers\local-wallet\example\run.ts:8:71
at new Promise ()
at __awaiter (D:\work\servers\local-wallet\example\run.ts:4:12)