Frontend crashed when migrating Legacy Grafana Alerting

[Konstantinov-Innokentii]

Pressing "migrate" button for Legacy Grafana Alerting integration leads to frontend crash with following exception:
After refreshing page everything works fine.

TypeError: Cannot read properties of undefined (reading '0')

    at UW (https://ops.grafana-ops.net/public/plugins/grafana-oncall-app/module.js:2:1926203)
    at div
    at IO (https://ops.grafana-ops.net/public/plugins/grafana-oncall-app/module.js:2:1695374)
    at n (https://ops.grafana-ops.net/public/plugins/grafana-oncall-app/module.js:2:2018095)
    at Ue (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:229:26283)
    at Te (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:229:23517)
    at Te (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:229:25713)
    at div
    at div
    at o (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:522:702)
    at div
    at div
    at div
    at div
    at H (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:137:79772)
    at a (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:61:30036)
    at div
    at L (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:522:4385)
    at nl (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:5814:4600)
    at bO (https://ops.grafana-ops.net/public/plugins/grafana-oncall-app/module.js:2:1690793)
    at c (https://ops.grafana-ops.net/public/plugins/grafana-oncall-app/module.js:2:1661811)
    at c (https://ops.grafana-ops.net/public/plugins/grafana-oncall-app/module.js:2:1661811)
    at c (https://ops.grafana-ops.net/public/plugins/grafana-oncall-app/module.js:2:1661811)
    at t (https://ops.grafana-ops.net/public/plugins/grafana-oncall-app/module.js:2:1666735)
    at Ot (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:6629:1720)
    at component
    at Suspense
    at r (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:61:119091)
    at ts (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:236:333)
    at Te (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:229:23517)
    at Xi (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:220:4723)
    at mn (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:220:10214)
    at pu (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:229:11733)
    at Te (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:229:25713)
    at div
    at div
    at main
    at div
    at kr (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:233:2446)
    at Xi (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:220:4723)
    at mn (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:220:10214)
    at Jt (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:220:9603)
    at Fu (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:229:12032)
    at Te (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:229:19689)
    at div
    at l (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:81:13220)
    at h (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:37:13792)
    at d (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:662:177424)
    at o (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:933:19488)
    at r (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:61:119091)
    at u (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:61:119600)
    at E (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/2277.1b8da5009acb24795fe5.js:198:117977)
    at vo (https://grafana-assets.grafana.net/grafana/10.2.0-59882/public/build/7769.a13733ad1c7ad21f8c25.js:247:127)