Logseq Plugin Samples repository: Translator plugin: handshake Timeout

I’m trying to run examples from the Logseq Plugin Samples repository.

I fetched the repo, switched to the logseq-a-translator dir, ran npm instal, then npm run build.
It has successfully built the dist and I installed it in Logseq.

However, upon enabling it, nothing works and I receive a message:

ERROR: [Loader:#_ifb2iwsl4 - logseq-a-translator][8:21:38 PM] loadhandshake Timeout Error: handshake Timeout
    at file:///tmp/.mount_LogseqMcGrxd/resources/app/js/lsplugin.core.js:2:88419
    at g (file:///tmp/.mount_LogseqMcGrxd/resources/app/js/main.js:3608:419)
(anonymous) @ instrument.js:191
write @ lsplugin.core.js:2
error @ lsplugin.core.js:2
load @ lsplugin.core.js:2
await in load (async)
s @ lsplugin.core.js:2
await in s (async)
a.emit @ lsplugin.core.js:2
set @ lsplugin.core.js:2
enable @ lsplugin.core.js:2
$cljs$core$js_invoke$$.$cljs$core$IFn$_invoke$arity$variadic$ @ core.cljs:534
(anonymous) @ plugins.cljs:280
vi @ react-dom.production.min.js:202
ui @ react-dom.production.min.js:32
xi @ react-dom.production.min.js:32
zg @ react-dom.production.min.js:55
rg @ react-dom.production.min.js:56
(anonymous) @ react-dom.production.min.js:66
(anonymous) @ react-dom.production.min.js:240
ti @ react-dom.production.min.js:30
hg @ react-dom.production.min.js:59
be @ react-dom.production.min.js:46
he @ react-dom.production.min.js:45
unstable_runWithPriority @ react.production.min.js:24
Za @ react-dom.production.min.js:73
vk.Events.current @ react-dom.production.min.js:240
Ki @ react-dom.production.min.js:44

Any thoughts on possible reason of this?