blank image issue on multiple req

Dockerfile

@@ -13,6 +13,9 @@ RUN mkdir -p /app/cache && chmod -R 777 /app/cache
 # Create the log file and set permissions
 RUN touch /app/pandasai.log && chmod 666 /app/pandasai.log
 
+# Set the MPLCONFIGDIR environment variable to a writable directory
+ENV MPLCONFIGDIR=/tmp/matplotlib
+
 # Copy the requirements file first
 COPY requirements.txt .
 

controller.py

@@ -38,6 +38,7 @@ os.makedirs("/app/cache", exist_ok=True)
 
 os.makedirs("/app", exist_ok=True)
 open("/app/pandasai.log", "a").close()  # Create the file if it doesn't exist
+os.environ['MPLCONFIGDIR'] = '/tmp/matplotlib'
 
 # Ensure the generated_charts directory exists
 os.makedirs("/app/generated_charts", exist_ok=True)
@@ -602,8 +603,7 @@ app = FastAPI()
 # Ensure necessary directories exist
 os.makedirs("/app/generated_charts", exist_ok=True)
 
-# Environment variables and configuration
-import os
+
 groq_api_keys = os.getenv("GROQ_API_KEYS", "").split(",")
 model_name = os.getenv("GROQ_LLM_MODEL")
 image_file_path = os.getenv("IMAGE_FILE_PATH")  # e.g. "/app/generated_charts"