Server error when calling `omg sendtx`

[dcb9]

Issue Type

[ x ] bug report
[ ] feature request

Current Behavior

After starting Plasma I tried to create a transaction and submit it to the child chain via the command omg sendtx, but it went wrong.

Expected Behavior

It should be successful.

Steps to Reproduce

1. start plasma
2. omg deposit 100 0xfd02EcEE62797e75D86BCff1642EB0844afB28c7
3. omg sendtx 1 0 0 0 0 0 0x0 0xfd02EcEE62797e75D86BCff1642EB0844afB28c7 50 0x4B3eC6c9dC67079E82152d6D55d8dd96a8e6AA26 45 3bb369fecdc16b93b99514d8ed9c2e87c5824cf4a6a98d2e8e91b7dd0c063304

• Full output of error:

  Error: {'code': -32000, 'message': 'Server error', 'data': {'type': 'KeyError', 'args': [1], 'message': '1'}}
  additional details can be found from the child chain's server output

• Child chain output of error:

  API Exception: {'type': 'KeyError', 'args': (1,), 'message': '1'}
  Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/json_rpc-1.10.8-py3.6.egg/jsonrpc/manager.py", line 112, in _get_responses
  result = method(*request.args, **request.kwargs)
  File "plasma/child_chain/server.py", line 20, in <lambda>
  dispatcher["apply_transaction"] = lambda transaction: child_chain.apply_transaction(rlp.decode(utils.decode_hex(transaction), Transaction))
  File "/Users/bob/Documents/omisego/plasma-mvp/plasma/child_chain/child_chain.py", line 36, in apply_transaction
  self.chain.validate_transaction(tx, self.current_block.spent_utxos)
  File "/Users/bob/Documents/omisego/plasma-mvp/plasma_core/chain.py", line 63, in validate_transaction
  input_tx = self.blocks[blknum].transaction_set[txindex]
  KeyError: 1
  127.0.0.1 - - [30/Aug/2018 09:38:34] "POST /jsonrpc HTTP/1.1" 200 -

• Command that caused error: omg sendtx 1 0 0 0 0 0 0x0 0xfd02EcEE62797e75D86BCff1642EB0844afB28c7 50 0x4B3eC6c9dC67079E82152d6D55d8dd96a8e6AA26 45 3bb369fecdc16b93b99514d8ed9c2e87c5824cf4a6a98d2e8e91b7dd0c063304
• Code that caused error: 0

Suggested Fix

Motivation for Change

System Specs

• python version: 3.6.5
• pyetherem version:
• environment (output of running pip freeze): atomicwrites==1.2.0 attrs==18.1.0 click==6.7 configparser==3.5.0 dnet==1.12 enum34==1.1.6 ethereum==2.3.0 flake8==3.5.0 funcsigs==1.0.2 json-rpc==1.10.8 mccabe==0.6.1 meld3==1.0.2 more-itertools==4.3.0 pathlib2==2.3.2 pbr==4.2.0 pdfminer==20140328 plasma==0.0.0 pluggy==0.7.1 plyvel==1.0.4 py==1.6.0 py-solc==3.1.0 pycodestyle==2.3.1 pyflakes==1.6.0 pytest==3.7.3 rlp==0.6.0 semantic-version==2.6.0 six==1.11.0 stevedore==1.29.0 virtualenv==16.0.0 virtualenv-clone==0.3.0 virtualenvwrapper==4.8.2 web3==4.5.0 Werkzeug==0.14.1
• operating system: Mac OS 10.13.6

[bg1156]

i believe this was an earlier bug with sendtx ping kfichter

[dcb9]

@bg1156 have you had this bug?

[smartcontracts]

Hi, what version Ganache CLI are you using?

[dcb9]

$ ganache-cli --version
Ganache CLI v6.1.8 (ganache-core: 2.2.1)

[smartcontracts]

If you shut down ganache and retry, does the same problem pop up?

[dcb9]

It's so weird, yesterday i restart ganache and retry, but i got same problem. after restarting my system it works now.

Thanks

[smartcontracts]

This does reveal another bug, though. I'll make an issue for it. Thank you for the PR!