Execution node stuck while serving Flashblocks

[davidedg]

Node setup

WSL 2.0 Ubuntu 24.04.4 LTS
12 CORE / 24 threads AMD Ryzen 9 5900X
40GB ram
Synced from snapshots ~2 months ago, pruned snapshots.
Latest official Docker compose, version tag v1.1.0 (upgraded from 0.8.x to 0.9.x to 1.1.0)

Issue

I'm using a python script to subscribe to Flashblocks.
It works well for some hours, then the script receives an error and the node stops responding to any RPC requests on any port.

I checked the docker compose logs for the execution layer, these are the last lines:

execution-1  | {"timestamp":"2026-06-16T12:44:15.987756Z","level":"INFO","fields":{"message":"Canonical chain committed","number":47412255,"hash":"0x1669c22954a7adc3e5cef94341865852e82a398646eda2c91a54c2721d5ed92c","elapsed":"501.907µs"},"target":"reth_node_events::node"}
execution-1  | {"timestamp":"2026-06-16T12:44:17.288335Z","level":"ERROR","fields":{"message":"could not process Flashblock","error":"transaction execution failed for tx 0x486f37d4339b320003dc69004f23c8a81d5024be81e8f977f707f43518935325 from sender 0xE76620D5f44545a508F81592257A0654722BE400: Transaction(Base(LackOfFundForMaxFee { fee: 524021123680971624, balance: 648216733450415 }))"},"target":"base_flashblocks::processor"}
execution-1  | {"timestamp":"2026-06-16T12:44:17.710390Z","level":"WARN","fields":{"message":"live pending state unavailable, falling back to full rebuild","block_number":47412257,"flashblock_index":0,"path":"next_block"},"target":"base_flashblocks::processor"}
execution-1  | {"timestamp":"2026-06-16T12:49:49.980510Z","level":"WARN","fields":{"message":"Long-lived read transaction has been timed out","open_duration":"300.000058128s","backtrace":"None"},"target":"libmdbx"}

This looks similar to:
base/base#2526

[phpshko]

Same problem at the same time

node-1       | {"timestamp":"2026-06-16T12:44:40.114485Z","level":"ERROR","fields":{"message":"Pubsub service backend error.","err":"backend connection task has stopped"},"target":"alloy_pubsub::service"}                                          
execution-1  | {"timestamp":"2026-06-16T12:49:19.131274Z","level":"WARN","fields":{"message":"Long-lived read transaction has been timed out","open_duration":"300.000109354s","backtrace":"None"},"target":"libmdbx"}