회색 화면만 나오고 진행이 안됩니다.

[gblue1223]

안녕하세요. 고생 많으십니다.
사진처럼 회색 화면만 나오고 진행이 안됩니다.
잘 됐던 이전 코드로 되돌려봐도 같은 증상이구요.
bootpay 버전은 4.8.3 입니다. 어떻게 해결해야할까요?

D/EGL_emulation( 6727): eglCreateContext: 0x7d2d1197cb50: maj 3 min 0 rcv 3
I/PlatformViewsController( 6727): Hosting view in view hierarchy for platform view: 0
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
D/EGL_emulation( 6727): app_time_stats: avg=40928.19ms min=40928.19ms max=40928.19ms count=1
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
I/flutter ( 6727): Bootpay.requestPayment({application_id: '65825280e57a7e001a5a0073', pg: '나이스페이', method: ['카드','네이버페이','카카오페이'], order_name: 'QR코드
I/flutter ( 6727): 스티커(1)', price: 8000.0, tax_free: 0.0, order_id: '2024-01-31-055719-71875a40-911f-4b12-85f1-c41780d6c3c5', subscription_id: '', authentication_id: '', metadata: {'callbackParam1':'value12','callbackParam2':'value34','callbackParam3':'value56','callbackParam4':'value78'}, user_token: '', extra: {card_quota: '', seller_name: '', delivery_day: 1, locale: 'ko', escrow: false,offer_period: '', display_cash_receipt: 'false', deposit_expiration: '', show_close_button: false,app_scheme: 'bootpayFlutter', use_card_point: false, direct_card_company: '',direct_card_quota: '',  use_order_id: false, international_card_only: false,phone_carrier: '', direct_samsungpay: false, test_deposit: false, enable_error_webhook: false, separately_confirmed: true,confirm_only_rest_api: false, open_type: 'redirect', redirect_url: 'https://api.bootpay.co.kr/v2', di
I/chromium( 6727): [INFO:CONSOLE(1)] "Uncaught SyntaxError: Invalid or unexpected token", source: https://webview.bootpay.co.kr/4.3.4/ (1)
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
D/EGL_emulation( 6727): app_time_stats: avg=285.56ms min=14.18ms max=677.16ms count=4
D/EGL_emulation( 6727): app_time_stats: avg=378.24ms min=17.07ms max=676.27ms count=3
D/EGL_emulation( 6727): app_time_stats: avg=119.50ms min=6.20ms max=681.96ms count=12
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.
E/FrameEvents( 6727): updateAcquireFence: Did not find frame.

[gblue1223]

item.name, payload.orderName 등에 \n 과 같은 특수문자가 들어가면 error 메시지 없이 저렇게 회색 화면만 나옵니다.
혹시 문제 겪는 분들 참고 바랍니다.