Hey! I don't think it is connected with StarkNet.py :/ 

However, we already had the same issue on the discord channel. Check the [thread](https://discord.com/channels/793094838509764618/1044112623974752286/1044220161386893343)!

tl;dr Your account could not have enough tokens to pay the fee!

war-in

Hey, I'm using StartkNet.py to make a transaction and it gets rejected. 
How to solve it?

What does this error means? (AssertionError: assert_not_zero failed: 0 = 0.)

How to verify Empiric’s Data Entries Using Events?

Hey guys! Does anybody have an idea what is `get_caller_address` returning on an L1 handler call?

_This question was originally posted on [StarkNet Discord](https://www.newton.so/view?tags=discord)_

Does anybody have an idea what is `get_caller_address` returning on an L1 handler call?

Does anyone know how to print a uint256 in protostar tests?

```
let (local balance) = IERC20.balanceOf(asset, owner);
%{
    balance = reflect.balance.get()
    print("current owner balance: ", balance)
%}
```

this errors out: [https://github.com/software-mansion/protostar/issues/1129](https://github.com/software-mansion/protostar/issues/1129)

Does anyone know how to print a uint256 in protostar tests?

I'm implementing the new version and had a couple Q's:

- Is `useStarknetExecute` now the only transaction method (for multi and single calls).
- Do we update the transaction manager on our end? I seem to remember `useStarknetInvoke` also update this automatically

_This question was originally posted on [StarkNet Discord](https://www.newton.so/view?tags=discord)_

Questions about useStarknetExecute. Do we update the transaction manager on our end? [StarkNet/Cairo]

Does anyone know how I can create an array and populate it in the python hint?
Basically something like


```cairo
let (my_array: felt*) = alloc()
%{
  ids.my_array = [1, 2, 3]
%}
```


How can I create an array and populate it in the hint Cairo lang/Protostar?

What is the expected blocktime for starknet mainnet?

_This question was originally posted on [StarkNet Discord](https://www.newton.so/view?tags=discord)_

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What does this error means? (AssertionError: assert_not_zero failed: 0 = 0.)

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