Issue when refreshing materialized views in descriptorParser

I have noticed this error when refreshing materialized views in descriptorParser:

org.postgresql.util.PSQLException: ERROR: relation "bw_line" does not exist
	at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2440)
	at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2183)
	at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:308)
	at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:441)
	at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:365)
	at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:143)
	at org.postgresql.jdbc.PgPreparedStatement.executeUpdate(PgPreparedStatement.java:120)
	at org.torproject.metrics.descriptorparser.Main.run(Main.java:223)
	at org.torproject.metrics.descriptorparser.Main.exec(Main.java:38)
	at org.torproject.metrics.descriptorparser.Main.main(Main.java:34)