Startup error with electrum

[Flexcash]

Hey I found this issue running Btc pay server on the last version. Trying to run Electrum:

INFO:2023-04-27 19:04:31,587: Synchronizing mempool . . .
Traceback (most recent call last):
File "/usr/local/bin/electrum-personal-server", line 8, in
sys.exit(main())
File "/usr/local/lib/python3.8/site-packages/electrumpersonalserver/server/common.py", line 491, in main
run_electrum_server(rpc, txmonitor, config)
File "/usr/local/lib/python3.8/site-packages/electrumpersonalserver/server/common.py", line 118, in run_electrum_server
mempool_sync.initial_sync(logger)
File "/usr/local/lib/python3.8/site-packages/electrumpersonalserver/server/mempoolhistogram.py", line 57, in initial_sync
self.poll_update(-1)
File "/usr/local/lib/python3.8/site-packages/electrumpersonalserver/server/mempoolhistogram.py", line 111, in poll_update
fee_rate = 1e8*mempool_tx["fee"] // mempool_tx["vsize"]
KeyError: 'fee'

I have found this issue before here: #266