05/31 Fix fetch price issues

app/routes/investments.py

@@ -257,6 +257,19 @@ def refresh_prices():
 @investments_bp.route('/api/price/<ticker>')
 @login_required
 def api_price(ticker):
-    """Live price lookup for a ticker — used in the add transaction form."""
-    price = fetch_price(ticker)
-    return jsonify({'ticker': ticker.upper(), 'price': price})
+    """Live price lookup for a ticker — used in the add/edit investment form."""
+    ticker = ticker.upper().strip()
+    error = None
+    price = None
+    try:
+        price = fetch_price(ticker)
+        if price is None:
+            error = f'No data returned for {ticker}. Check the ticker format.'
+    except Exception as e:
+        error = str(e)
+
+    return jsonify({
+        'ticker': ticker,
+        'price':  price,
+        'error':  error,
+    })