$wpdb error when selecting user meta table

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I’m trying to pull data from a database and I’m getting the following error message:

WordPress database error: [] SELECT user_id, meta_key, meta_value FROM wp_usermeta WHERE user_id IN (1) ORDER BY umeta_id ASC

Is there a common mistake I’m making by getting this? What does error message mean exactly? Shouldn’t there be a value in the WHERE clause?