LTD-Dev

I can confirm the same

```Node: Nimiq NodeJS Client starting (network=main, dumb, miner=true, rpc=false, metrics=false) { Error: MDB_BAD_TXN: Transaction must abort, has a child, or is invalid at LMDBBackend._get (/home/iteonix/core/node_modules/@nimiq/jungle-db/dist/lmdb.js:7166:42) at LMDBBackend.getSync (/home/iteonix/core/node_modules/@nimiq/jungle-db/dist/lmdb.js:7368:28) at LMDBBackend.get...