electrumx reports an error in the container

electrumx reports an error in the container，My error specific information below

INFO:electrumx:ElectrumX server starting
INFO:electrumx:logging level: INFO
INFO:Controller:Python version: 3.7.9 (default, Aug 18 2020, 04:11:54)  [GCC 9.3.0]
INFO:Controller:software version: ElectrumX 1.15.0
INFO:Controller:aiorpcX version: 0.18.4
INFO:Controller:supported protocol versions: 1.4-1.4.2
INFO:Controller:event loop policy: None
INFO:Controller:reorg limit is 200 blocks
INFO:Daemon:daemon #1 at 172.17.0.1:18332/ (current)
INFO:DB:switching current directory to /data
INFO:DB:using rocksdb for DB backend
INFO:DB:opened UTXO DB (for sync: True)
INFO:DB:UTXO DB version: 8
INFO:DB:coin: Bitcoin
INFO:DB:network: mainnet
INFO:DB:height: 656,477
INFO:DB:tip: 0000000000000000000457df9961a123212340daf566b899aaa54197d0648d1b
INFO:DB:tx count: 585,898,367
INFO:DB:flushing DB cache at 1,200 MB
INFO:History:history DB version: 1
INFO:History:flush count: 15,018
INFO:SessionManager:RPC server listening on 0.0.0.0:8000
INFO:Prefetcher:catching up to daemon height 656,684 (207 blocks behind)
INFO:BlockProcessor:chain reorg detected
INFO:BlockProcessor:chain was reorganised replacing 1 block at heights 656,477-656,477
INFO:BlockProcessor:read 1 blocks from disk
INFO:Prefetcher:cancelled; prefetcher stopping 
INFO:SessionManager:closing down server for rpc://0.0.0.0:8000
INFO:Controller:shutting down
INFO:Controller:shutdown complete
ERROR:electrumx:ElectrumX server terminated abnormally
Traceback (most recent call last):
  File "/electrumx/electrumx_server", line 35, in main
    asyncio.run(controller.run())
  File "/usr/local/lib/python3.7/asyncio/runners.py", line 43, in run
    return loop.run_until_complete(main)
  File "/usr/local/lib/python3.7/asyncio/base_events.py", line 587, in run_until_complete
    return future.result()
  File "/electrumx/electrumx/lib/server_base.py", line 129, in run
    await server_task
  File "/electrumx/electrumx/lib/server_base.py", line 102, in serve
    await self.serve(shutdown_event)
  File "/electrumx/electrumx/server/controller.py", line 134, in serve
    await group.spawn(wait_for_catchup())
  File "/usr/local/lib/python3.7/site-packages/aiorpcX-0.18.4-py3.7.egg/aiorpcx/curio.py", line 242, in __aexit__
    await self.join()
  File "/usr/local/lib/python3.7/site-packages/aiorpcX-0.18.4-py3.7.egg/aiorpcx/curio.py", line 211, in join
    raise task.exception()
  File "/electrumx/electrumx/server/block_processor.py", line 702, in fetch_and_process_blocks
    await group.spawn(self._process_prefetched_blocks())
  File "/usr/local/lib/python3.7/site-packages/aiorpcX-0.18.4-py3.7.egg/aiorpcx/curio.py", line 242, in __aexit__
    await self.join()
  File "/usr/local/lib/python3.7/site-packages/aiorpcX-0.18.4-py3.7.egg/aiorpcx/curio.py", line 211, in join
    raise task.exception()
  File "/electrumx/electrumx/server/block_processor.py", line 663, in _process_prefetched_blocks
    await self.check_and_advance_blocks(blocks)
  File "/electrumx/electrumx/server/block_processor.py", line 240, in check_and_advance_blocks
    await self.reorg_chain()
  File "/electrumx/electrumx/server/block_processor.py", line 282, in reorg_chain
    await self.run_in_thread_with_lock(self.backup_blocks, raw_blocks)
  File "/electrumx/electrumx/server/block_processor.py", line 212, in run_in_thread_with_lock
    return await asyncio.shield(run_in_thread_locked())
  File "/electrumx/electrumx/server/block_processor.py", line 211, in run_in_thread_locked
    return await run_in_thread(func, *args)
  File "/usr/local/lib/python3.7/site-packages/aiorpcX-0.18.4-py3.7.egg/aiorpcx/curio.py", line 68, in run_in_thread
    return await get_event_loop().run_in_executor(None, func, *args)
  File "/usr/local/lib/python3.7/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/electrumx/electrumx/server/block_processor.py", line 500, in backup_blocks
    self.backup_txs(block.transactions, is_unspendable)
  File "/electrumx/electrumx/server/block_processor.py", line 547, in backup_txs
    assert n == 0
AssertionError

Has anyone encountered this problem

Start with electrumx/server/block_processor.py, especially backup_blocks(), backup_txs(), and the assertion at line 547 in the traceback. Review the reorg_chain() path and the reported container log to understand why the reorganization reaches this failure. Done means the reported reorg no longer terminates ElectrumX abnormally and the container remains running.