IndexError: list index out of range
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Description
Crash Report
This crash report was reported through the automatic crash reporting system 🤖
Traceback
File "electrum\gui\qt\main_window.py", line 1574, in do_pay
File "electrum\gui\qt\main_window.py", line 1588, in do_pay_invoice
File "electrum\gui\qt\main_window.py", line 1628, in pay_onchain_dialog
File "electrum\gui\qt\confirm_tx_dialog.py", line 116, in have_enough_funds_assuming_zero_fees
File "electrum\gui\qt\main_window.py", line 1617, in <lambda>
File "electrum\wallet.py", line 1191, in make_unsigned_transaction
File "electrum\coinchooser.py", line 332, in make_tx
File "electrum\coinchooser.py", line 427, in choose_buckets
File "electrum\coinchooser.py", line 427, in <listcomp>
File "electrum\coinchooser.py", line 456, in penalty
File "electrum\coinchooser.py", line 321, in tx_from_buckets
File "electrum\coinchooser.py", line 235, in _construct_tx_from_selected_buckets
IndexError: list index out of range
Reporter
This issue was reported by 35 user(s):
| Electrum Version | Python Version | Operating System | Wallet Type | Locale | Stack |
|---|---|---|---|---|---|
| 4.0.2 | 3.7.7 (tags/v3.7.7:d7c567b08f, Mar 10 2020, 09:44:33) [MSC v.1900 32 bit (Intel)] | Windows-2012ServerR2-6.3.9600 | imported | en_US | ℹ |
| 4.0.2 | 3.7.7 (tags/v3.7.7:d7c567b08f, Mar 10 2020, 09:44:33) [MSC v.1900 32 bit (Intel)] | Windows-2012ServerR2-6.3.9600 | imported | en_US | ℹ |
| 4.0.2 | 3.7.7 (tags/v3.7.7:d7c567b08f, Mar 10 2020, 09:44:33) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.19041-SP0 | 2fa | en_US | ℹ |
| 4.0.4 | 3.7.9 (default, Jun 28 2018, 19:01:02) [GCC 5.4.0 20160609] | Linux-5.7.0-kali3-amd64-x86_64-with-debian-kali-rolling | imported | en_US | ℹ |
| 4.0.4 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.18362-SP0 | imported | vi_VN | ℹ |
| 4.0.4 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.18362-SP0 | imported | vi_VN | ℹ |
| 4.0.4 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.19041-SP0 | imported | uk_UA | ℹ |
| 4.0.7 | 3.7.9 (default, Sep 11 2020, 17:18:37) [Clang 11.0.0 (clang-1100.0.33.17)] | Darwin-18.7.0-x86_64-i386-64bit | imported | ? | ℹ |
| 4.0.7 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.18362-SP0 | standard | pt_BR | ℹ |
| 4.0.9 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.18362-SP0 | imported | sk_SK | ℹ |
| 4.0.9 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.18362-SP0 | imported | sk_SK | ℹ |
| 4.0.9 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.18362-SP0 | imported | sk_SK | ℹ |
| 4.0.5 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.18362-SP0 | standard | en_US | ℹ |
| 4.0.5 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.18362-SP0 | standard | en_US | ℹ |
| 4.0.9 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.19041-SP0 | imported | ru_RU | ℹ |
| 4.0.9 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.19041-SP0 | imported,standard | en_US | ℹ |
| 4.0.9 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.18362-SP0 | standard | en_US | ℹ |
| 4.0.9 | 3.7.9 (default, Sep 11 2020, 17:18:37) [Clang 11.0.0 (clang-1100.0.33.17)] | Darwin-19.6.0-x86_64-i386-64bit | standard | ? | ℹ |
| 4.0.9 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.18362-SP0 | standard,imported | en_US | ℹ |
| 4.0.9 | 3.7.9 (default, Sep 11 2020, 17:18:37) [Clang 11.0.0 (clang-1100.0.33.17)] | Darwin-20.1.0-x86_64-i386-64bit | imported,standard | ? | ℹ |
| 4.0.9 | 3.7.9 (default, Jun 28 2018, 19:01:02) [GCC 5.4.0 20160609] | Linux-5.4.89-1-MANJARO-x86_64-with-arch-Manjaro-Linux | standard,imported | de_CH | ℹ |
| 4.0.9 | 3.7.9 (default, Jun 28 2018, 19:01:02) [GCC 5.4.0 20160609] | Linux-5.4.89-1-MANJARO-x86_64-with-arch-Manjaro-Linux | standard,imported | de_CH | ℹ |
| 4.0.9 | 3.7.9 (default, Jun 28 2018, 19:01:02) [GCC 5.4.0 20160609] | Linux-5.3.0-kali2-amd64-x86_64-with-debian-kali-rolling | standard | en_US | ℹ |
| 4.0.9 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.18362-SP0 | imported,standard | en_US | ℹ |
| 4.0.9 | 3.7.9 (default, Sep 11 2020, 17:18:37) [Clang 11.0.0 (clang-1100.0.33.17)] | Darwin-20.3.0-x86_64-i386-64bit | imported | ? | ℹ |
| 4.0.9 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.19041-SP0 | imported | es_AR | ℹ |
| 4.1.2 | 3.8.8 (tags/v3.8.8:024d805, Feb 19 2021, 13:08:11) [MSC v.1928 32 bit (Intel)] | Windows-10-10.0.19041-SP0 | standard | en_IN | ℹ |
| 4.1.2 | 3.8.8 (tags/v3.8.8:024d805, Feb 19 2021, 13:08:11) [MSC v.1928 32 bit (Intel)] | Windows-10-10.0.19041-SP0 | standard | en_IN | ℹ |
| 4.1.2 | 3.7.10 (default, Mar 31 2021, 13:19:38) [Clang 11.0.0 (clang-1100.0.33.17)] | Darwin-20.4.0-x86_64-i386-64bit | standard | ? | ℹ |
| 4.1.2 | 3.7.10 (default, Mar 31 2021, 13:19:38) [Clang 11.0.0 (clang-1100.0.33.17)] | Darwin-18.7.0-x86_64-i386-64bit | imported,standard | ? | ℹ |
| 4.1.2 | 3.8.8 (tags/v3.8.8:024d805, Feb 19 2021, 13:08:11) [MSC v.1928 32 bit (Intel)] | Windows-10-10.0.14393-SP0 | imported | zh_CN | ℹ |
| 4.1.2 | 3.8.8 (tags/v3.8.8:024d805, Feb 19 2021, 13:08:11) [MSC v.1928 32 bit (Intel)] | Windows-10-10.0.17763-SP0 | imported | ru_RU | ℹ |
| 4.0.9 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.19041-SP0 | imported | en_US | ℹ |
| 4.0.9 | 3.9.2 (default, Feb 28 2021, 17:03:44) [GCC 10.2.1 20210110] | Linux-5.10.0-19-amd64-x86_64-with-glibc2.31 | imported | en_GB | ℹ |
| 4.0.9 | 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] | Windows-10-10.0.16299-SP0 | 2fa | en_US | ℹ |
Additional Information
Tried to create an op_return transaction: OP_RETURN 830a00b7c030d02376f039489c9cb362, 0
Clicked on Pay...
547
Pay to: OP_RETURN f2ca1bb6c7e907d06dafe4687e579fce76b37e4e93b7605022da52e6ccc26fd2, Amount: 0
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the OP_RETURN payment flow from the report, then trace the call chain through electrum/gui/qt/main_window.py, electrum/gui/qt/confirm_tx_dialog.py, electrum/wallet.py, and electrum/coinchooser.py. Focus on the failing paths around make_unsigned_transaction, choose_buckets, penalty, and _construct_tx_from_selected_buckets. Done means the reported OP_RETURN transaction no longer raises IndexError during Pay.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100