Screen flashing and stuck at boot OC

Was trying to migrate my existing Catalina installation to OC, the booting process is stuck and doesn't show any error. thanks

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https://preview.redd.it/1048a7f7d8271.jpg?width=4000&format=pjpg&auto=webp&s=d01ab4f3f8b6aab1581b481aaf605bde0a9c9c03