Issue with Solr 7.7.2 - ClassCastException: org.apache.solr.common.util.ByteArrayUtf8CharSequence

org.apache.solr.update.processor.AtomicUpdateDocumentMerger.doSet(AtomicUpdateDocumentMerger.java:319) Mit freundlichen Grüßen / Kind regards David Winter

Slow ReadProcessor read fields Warnings - Ideas to investigate?

regards David Winter