Postprocessing: undefined field: "cr_host_chance_d"

[okybaca]

During the automatically started prostprocessing, indicated by

I 2024/01/30 18:33:14 CollectionConfiguration * postprocessed 1445900 from 20273883 collection documents; 4633 ppm; 4063 minutes remaining

lines in the log, every several hunderds of entries, an error is thrown:

request: http://127.0.0.1:8983/solr/collection1/update?wt=javabin&version=2 Remote error message: undefined field: "cr_host_chance_d" at org.apache.solr.client.solrj.impl.ConcurrentUpdateSolrClient$Runner.sendUpdateStream(ConcurrentUpdateSolrClient.java:394) at org.apache.solr.client.solrj.impl.ConcurrentUpdateSolrClient$Runner.run(ConcurrentUpdateSolrClient.java:191) at org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:829)

From which I guess, yacy is trying to update some entry, where "cr_host_chance_d" field is undefined.

Should such state of database result in solr error, since it's a normal application run?
Shouldn't it be soluted in the app's code instead?
Is the error corrected afterwards and the field is filled?