same thing happened to me.but i just deleted the add-on.
Add-Ons/Server_Test/server.cs (60): Unable to find object: '0' attempting to call function 'playThread'BackTrace: ->[PirateCannonPackage]armor::onTrigger->[TankPackage]armor::onTrigger->armor::onTrigger->[ThrowMod]Player::ActivateStuff->Player::attemptThrowAdd-Ons/Server_Test/server.cs (61): Unable to find object: '0' attempting to call function 'setLookLimits'BackTrace: ->[PirateCannonPackage]armor::onTrigger->[TankPackage]armor::onTrigger->armor::onTrigger->[ThrowMod]Player::ActivateStuff->Player::attemptThrowAdd-Ons/Server_Test/server.cs (63): Unable to find object: '0' attempting to call function 'addVelocity'BackTrace: ->[PirateCannonPackage]armor::onTrigger->[TankPackage]armor::onTrigger->armor::onTrigger->[ThrowMod]Player::ActivateStuff->Player::attemptThrow
I would suggest attaching the whole console.log to a post.