Case C-398/20: Judgment of the Court (Sixth Chamber) of 11 November 2021 (request for a preliminary ruling from the Krajský soud v Brně — Czech Republic) — ELVOSPOL v Odvolací finanční ředitelství (Reference for a preliminary ruling — Value added tax (VAT) — Directive 2006/112/EC — Article 90 — Reduction of the taxable amount for VAT purposes — Total or partial non-payment of the price on account of the debtor’s insolvency — Conditions imposed by national legislation for the adjustment of output VAT — Condition that the claim not paid in whole or in part must not have arisen during the six-month period preceding the declaration of insolvency of the debtor company — Non-compliance)