Well, this error only occurs after the first reboot into ParrotOS installation after TPM is reset, new TOTP/HOTP keys are generated, and files in /boot are updated.
Yes, I do dual boot with PureOS on a different SSD where I have to switch /boot files in PureBoot options before.
Fortunately, Parrot OS uses the same type of Calamares installer like PureOS. Also, there are try/install, ram, memory test, troubleshoot, live, and so further boot modes after applying USB boot; however, try/install is recommended and worked perfectly without encryption enabled if and only if PureOS partitions are copied exactly via manual partition.
Thanks for your swift reponse ; )!