==== Error ====
* https://logstash.wikimedia.org/app/discover#/doc/0fade920-6712-11eb-8327-370b46f9e7a5/ecs-k8s-1-1.11.0-7-2025.17?id=Sk70apYBF1zH-YDaAzfT
```name=message
ER_PARSE_ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ')
ORDER BY source_title, frequency DESC' at line 5
```
```name=trace,lines=10
Error: ER_PARSE_ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ')
ORDER BY source_title, frequency DESC' at line 5
at Sequence._packetToError (/srv/service/node_modules/mysql/lib/protocol/sequences/Sequence.js:47:14)
at Query.ErrorPacket (/srv/service/node_modules/mysql/lib/protocol/sequences/Query.js:79:18)
at Protocol._parsePacket (/srv/service/node_modules/mysql/lib/protocol/Protocol.js:291:23)
at Parser._parsePacket (/srv/service/node_modules/mysql/lib/protocol/Parser.js:433:10)
at Parser.write (/srv/service/node_modules/mysql/lib/protocol/Parser.js:43:10)
at Protocol.write (/srv/service/node_modules/mysql/lib/protocol/Protocol.js:38:16)
at Socket.<anonymous> (/srv/service/node_modules/mysql/lib/Connection.js:88:28)
at Socket.<anonymous> (/srv/service/node_modules/mysql/lib/Connection.js:526:10)
at Socket.emit (node:events:514:28)
at addChunk (node:internal/streams/readable:343:12)
at readableAddChunk (node:internal/streams/readable:316:9)
at Readable.push (node:internal/streams/readable:253:10)
at TCP.onStreamRead (node:internal/stream_base_commons:190:23)
--------------------
at Protocol._enqueue (/srv/service/node_modules/mysql/lib/protocol/Protocol.js:144:48)
at Connection.query (/srv/service/node_modules/mysql/lib/Connection.js:198:25)
at node:internal/util:411:7
at new Promise (<anonymous>)
at Connection.query (node:internal/util:397:12)
at SectionSuggester.querySectionMapping (file:///srv/service/lib/suggestion/SectionSuggester.js:54:27)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
at async SectionSuggester.getSectionMapping (file:///srv/service/lib/suggestion/SectionSuggester.js:119:19)
at async SectionSuggester.getMissingSections (file:///srv/service/lib/suggestion/SectionSuggester.js:159:19)
at async suggestSections (file:///srv/service/lib/routes/v2.js:371:20)
```
```name=query
SELECT source_title, target_title, frequency
FROM titles
WHERE source_language='en'
AND target_language='bn'
AND source_title IN ()
ORDER BY source_title, frequency DESC
```
==== Impact ====
Not major but spammy logs in logstash.
{F59389550}
==== Notes ====
Section mapping API fails
Reproduce with: `/v2/suggest/sections/Brochand/en/bn`