After upgrade of Litecoincore from v018 and installation of Litecoin Core Version v0.21.2 on Mac OS Monterey Version 12.4, wallet becomes stuck at Syncing Headers. Active connections are available, so network connectivity is fine.

Last part of the log:

2022-06-01T15:35:17Z Potential stale tip detected, will try using extra outbound peer (last tip update: 5221 seconds ago)
2022-06-01T15:37:00Z ERROR: AcceptBlockHeader: block 9a4de34bd49ceda276a5d7df67427ae3e10f4b3978255fbb192333afcd559a0e is marked invalid
2022-06-01T15:37:00Z Disconnecting and discouraging peer 258!
2022-06-01T15:38:01Z New outbound peer connected: version: 70016, blocks=2273111, peer=262 (full-relay)
2022-06-01T15:38:17Z Potential stale tip detected, will try using extra outbound peer (last tip update: 5401 seconds ago)
2022-06-01T15:38:34Z Timeout downloading headers from peer=223, disconnecting
2022-06-01T15:38:51Z New outbound peer connected: version: 70016, blocks=2273111, peer=263 (full-relay)

Tried creating new Wallet. No success.

Wallet is now configured for v0.21.2 so I cannot back down to v18.

Is there a command to completely re-download the blocks? Should I delete the Blocks folder and would that re-download?

debug.log