🔍 Debugging Crypto Buy Issue
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✅ Database connection successful

📊 Testing with:
   User ID: 1
   Currency: USDT
   Amount: 100 UGX
❌ Error: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'currency_code' in 'WHERE'
Stack trace: #0 /home/kakoexchange25/public_html/debug_crypto_buy.php(25): PDO->prepare()
#1 {main}