It's actually TinkersOC trying to find OpenComputers (https://github.com/BrisingrAerowing/TinkersOCDrivers/blob/8b5fa978817104f3fd8a96e70502b3caf49bb75d/build.gradle#L61).
You have both Tinkers and OpenComputers installed, right?
It crashes because TinkersOC doesn't have it's dependencies flagged as required (https://github.com/BrisingrAerowing/TinkersOCDrivers/pull/3).