Fix folder path

app.py

@@ -54,7 +54,7 @@ def query():
         page = pdf.pages[result["page"]]
         img_name = result["path"][7:] + "_" + str(result["page"]) + ".jpg"
         img_path = os.path.join(IMAGE_DIR, img_name)
-        page.to_image().save(img_name)
+        page.to_image().save(img_path)
         return "slide/" + img_name
     except:
         return str(sys.exc_info()[0]).replace("<", "-").replace(">", "-")
@@ -63,9 +63,9 @@ def query():
 def slide(img_name):
     path = os.path.join(IMAGE_DIR, img_name)
     if "/" in img_name or "\\" in img_name:
-        return "bad image name"
+        return "bad image name", 400
     if not os.path.exists(path):
-        return "image not present"
+        return "image not present", 404
     return send_file(path, mimetype='image/jpg')