Closed the img buffer after use

app.py

@@ -305,6 +305,8 @@ def count(image, text, prompts, state, device):
 
     output_img = Image.open(img_buf)
 
+    img_buf.close()
+
     if AppSteps.TEXT_AND_EXEMPLARS not in state:
         exemplar_image = ImagePrompter(type='pil', label='Visual Exemplar Image', value=prompts, interactive=True, visible=True)
         new_submit_btn = gr.Button("Count", variant="primary", interactive=False)
@@ -391,6 +393,8 @@ def count_main(image, text, prompts, device):
 
     output_img = Image.open(img_buf)
 
+    img_buf.close()
+
     out_label = "Detected instances predicted with"
     if len(text.strip()) > 0:
         out_label += " text"