Boot back into Fastboot mode and flash a patched vbmeta.img file, or install a custom kernel that disables forced encryption. Conclusion
: Always keep a copy of your stock recovery.img (extracted from your specific firmware build) to use as a base for porting and repacking. How To Port TWRP For Android 10 and 11 Devices – MediaTek twrp vivo y71 repack
Installing a repacked custom recovery is more complex than installing an official one. It requires unlocking the bootloader and disabling Android Verified Boot (AVB). Boot back into Fastboot mode and flash a patched vbmeta