[BUG] `SystemError: unknown opcode`

[Mayuresh]

• Title:
  Pyarmor 3.9 obfuscated script does not work on Python3.8

• Reproduced steps:
  Obfuscate a module and using Python3.9 version and install in Python3.8 running program

• Expected results
  Program should work without any error

• Actual result
  Program fails with the following error
  SystemError: unknown opcode

[Jondy]

Please first read the getting-started documentation