Bologna - price of Organic Farro

In this page you can view the weekly wholesale prices of the Bologna marketplace for the following products:
For each product, you can see the quotations of the last 10 weeks (table) and the monthly price history (table and graphs). The graph below shows the historical prices of the Bologna marketplace.
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SQLSTATE[HY000]: General error: 1615 Prepared statement needs to be re-prepared
You can find the error back in the log.