Fix: Add Decimal JSON serialization handler for analytics charts

aisbf/analytics.py

@@ -23,6 +23,7 @@ Why did the programmer quit his job? Because he didn't get arrays!
 Token Usage Analytics module for AISBF.
 """
 import json
+from decimal import Decimal
 import csv
 import io
 from typing import Dict, List, Optional, Any
@@ -1113,7 +1114,13 @@ class Analytics:
             'recommendations': self.get_optimization_recommendations()
         }
         
-        return json.dumps(data, indent=2)
+        # Handle Decimal values from MySQL for JSON serialization
+        def decimal_default(obj):
+            if isinstance(obj, Decimal):
+                return float(obj)
+            raise TypeError(f"Object of type {obj.__class__.__name__} is not JSON serializable")
+
+        return json.dumps(data, indent=2, default=decimal_default)
     
     def export_to_csv(
         self,

main.py

+from decimal import Decimal
 """
 Copyleft (C) 2026 Stefy Lanza <stefy@nexlab.net>
 
@@ -2228,7 +2229,12 @@ async def dashboard_analytics(
         "session": request.session,
         "is_admin": is_admin,
         "provider_stats": provider_stats,
-        "token_over_time": json.dumps(token_over_time),
+        # Handle Decimal values from MySQL for JSON serialization
+        def decimal_default(obj):
+            if isinstance(obj, Decimal):
+                return int(obj)
+            raise TypeError(f"Object of type {obj.__class__.__name__} is not JSON serializable")
+        "token_over_time": json.dumps(token_over_time, default=decimal_default),
         "model_performance": model_performance,
         "cost_overview": cost_overview,
         "recommendations": recommendations,