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Episode
January 18, 2019

Debugging “VM Exception: invalid opcode / revert”

Julien Klepatch

When I started learning Solidity, there was nothing more frustrating than running accross “VM Exception: invalid opcode” or “VM Exception: revert” errors. These errors messages are really not helpful.

In this video, I explain you:

  • what are these errors
  • what kind of Solidity code trigger them
  • how to troubleshoot them

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