I'm getting a lot of the following errors during ingest of data:

com.datastax.oss.driver.api.core.servererrors.WriteTimeoutException: Cassandra timeout during COUNTER write query at consistency ONE (1 replica were required but only 0 acknowledged the write)         at com.datastax.oss.driver.api.core.servererrors.WriteTimeoutException.copy(WriteTimeoutException.java:96)         at com.datastax.oss.driver.internal.core.util.concurrent.CompletableFutures.getUninterruptibly(CompletableFutures.java:149)         at com.datastax.oss.driver.internal.core.cql.CqlRequestSyncProcessor.process(CqlRequestSyncProcessor.java:53)         at com.datastax.oss.driver.internal.core.cql.CqlRequestSyncProcessor.process(CqlRequestSyncProcessor.java:30)         at com.datastax.oss.driver.internal.core.session.DefaultSession.execute(DefaultSession.java:230)         at com.datastax.oss.driver.api.core.cql.SyncCqlSession.execute(SyncCqlSession.java:54)

The CQL being executed is:
"update doc.seq set doccount=doccount+? where id=?"

Table is:

CREATE TABLE doc.seq (
    id text PRIMARY KEY,
    doccount counter
) WITH additional_write_policy = '99p'
    AND bloom_filter_fp_chance = 0.01
    AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'}
    AND cdc = false
    AND comment = ''
    AND compaction = {'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy', 'max_threshold': '32', 'min_threshold': '4'}     AND compression = {'chunk_length_in_kb': '16', 'class': 'org.apache.cassandra.io.compress.LZ4Compressor'}
    AND crc_check_chance = 1.0
    AND default_time_to_live = 0
    AND extensions = {}
    AND gc_grace_seconds = 864000
    AND max_index_interval = 2048
    AND memtable_flush_period_in_ms = 0
    AND min_index_interval = 128
    AND read_repair = 'BLOCKING'
    AND speculative_retry = '99p';

Total rows in the doc.seq table is 356.  What could cause this timeout error?
Thank you!

-Joe

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