Urgent help needed: Value Streams not working

Hi,

I'm running Thingworx 8 server locally, my DB is Postgresql - Value Streams are exhibiting very odd behavior, when I create a value stream (using ThingworxPersistenceProvider), connect it to a thing & run QueryPropertyHistory - I get an error saying Data Store Unknown. Switched on stack trace and this is what I got:

2020-02-21 16:55:35.516+0400 [L: ERROR] [O: E.c.t.p.p.PostgresDataExceptionTranslator] [I: ] [U: Administrator] [S: ] [T: http-nio-8080-exec-8] [message: [1,018] Data store unknown error: [Error occurred while accessing the data provider.]] org.postgresql.util.PSQLException: ERROR: relation "value_stream" does not exist
Position: 32
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)

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I'm also unable to delete any value streams, get an error saying unable to dispose.  When I look at the valuestream_model table in PGAdmin, it's empty, though they do exist in the thing_model table.