node crashes on standard small instance of digital ocean MDB_READERS_FULL

[TimDaub]

[1] file:///root/kiwistand/node_modules/lmdb/read.js:697
[1]                                     readTxn = new Txn(env, 0x20000, lastReadTxn && !
lastReadTxn.isDone && lastReadTxn);
[1]                                               ^
[1]
[1] Error: MDB_READERS_FULL: Environment maxreaders limit reached
[1]     at renewReadTxn (file:///root/kiwistand/node_modules/lmdb/read.js:697:16)
[1]     at resetCursor (file:///root/kiwistand/node_modules/lmdb/read.js:367:81)
[1]     at iterable.iterate (file:///root/kiwistand/node_modules/lmdb/read.js:391:5)
[1]     at [Symbol.iterator] (file:///root/kiwistand/node_modules/lmdb/util/RangeIterabl
e.js:75:31)
[1]     at Function.from (<anonymous>)
[1]     at Module.all (file:///root/kiwistand/node_modules/@attestate/crawler/src/databa
se.mjs:38:16)
[1]     at async Module.allowlist (file:///root/kiwistand/src/chainstate/registry.mjs:10
:15)
[1]     at async put (file:///root/kiwistand/src/sync.mjs:148:23)
[1]     at async file:///root/kiwistand/src/sync.mjs:204:5
[1]     at async file:///root/kiwistand/src/sync.mjs:180:22 {
[1]   code: -30790
[1] }
[1]
[1] Node.js v18.16.0
[1] npm run start exited with code 1
^C[0] npm run watch:web exited with code SIGINT