Update app.py

app.py

@@ -36,7 +36,7 @@ def get_track_by_tags(tags, pat, duration, maxit=20, loop=False):
     for i in range(maxit):
         r = httpx.get(trackurl)
         if r.status_code == 200:
-            data = open(trackurl, "r").read()
+            data = open(r, "r").read()
             encoded = base64.b64encode(data)
             return encoded
         time.sleep(1)