# The Gradio API is not working
**URL:**
**Author:**  [@GoldDany](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2FGoldDany)%5C
**Post date:** [August 11, 2025, 1:02pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fthe-gradio-api-is-not-working%2F166407%2F1 "2025-08-11T13:02:57Z")
the gradio throws error: Traceback (most recent call last):
File “C:\Users\danya\PycharmProjects\DiDefBackend\DiDef\SentenceTransformer.py”, line 45, in
client = Client(
File “C:\Users\danya\AppData\Local\Programs\Python\Python39\lib\site-packages\gradio\_client\client.py”, line 171, in **init**
self.\_info = self.\_get\_api\_info()
File “C:\Users\danya\AppData\Local\Programs\Python\Python39\lib\site-packages\gradio\_client\client.py”, line 564, in _get\_api\_info
info = r.json()
File “C:\Users\danya\AppData\Local\Programs\Python\Python39\lib\site-packages\httpx\_models.py”, line 764, in json
return jsonlib.loads(self.content, \*\*kwargs)
File "C:\Users\danya\AppData\Local\Programs\Python\Python39\lib\json\_init_.py", line 346, in loads
return \_default\_decoder.decode(s)
File “C:\Users\danya\AppData\Local\Programs\Python\Python39\lib\json\decoder.py”, line 337, in decode
obj, end = self.raw\_decode(s, idx=\_w(s, 0).end())
File “C:\Users\danya\AppData\Local\Programs\Python\Python39\lib\json\decoder.py”, line 355, in raw\_decode
raise JSONDecodeError(“Expecting value”, s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
why? My code is very simple:
from gradio\_client import Client
client = Client(
src = “GoldDany/DiDefBackend”, #my Space is public
)
result = client.predict(
text=“Hello!!”,
api\_name=“/predict”,
)
print(result)
---
**Author:**  [@John6666](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2FJohn6666)%5C
**Post date:** [August 11, 2025, 1:53pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fthe-gradio-api-is-not-working%2F166407%2F2 "2025-08-11T13:53:44Z")
> Python39
I think this is probably the culprit this time.
[Gradio 5 only works with Python `3.10` or later](https://github.com/gradio-app/gradio/issues/9634) on both the server and client, so I think the error is occurring because the versions are different between the client and server.
I don’t know if this error can be potentially resolved…
The simplest solution is to use Python `3.10` or later.😅
```py
# pip install -U gradio_client (in Python 3.9 environment)
import subprocess
subprocess.run("pip show gradio_client", shell=True) # Version: 1.3.0 (Release date: 2024.08.08)
from gradio_client import Client
client = Client(src="John6666/apitest1") # Gradio 4.41.0
result = client.predict(text="Hello!!", api_name="/predict")
print(result) # [0.010964062064886093, 0.02713009901344776, -0.024556249380111694, 0.01713254489004612, 0.04088324308395386, -0.005583592690527439, 0.015990763902664185,...
client = Client(src="GoldDany/DiDefBackend") # Gradio 5.42.0
result = client.predict(text="Hello!!", api_name="/predict")
print(result) # error
```
---
**Author:**  [@GoldDany](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2FGoldDany)%5C
**Post date:** [August 11, 2025, 2:24pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fthe-gradio-api-is-not-working%2F166407%2F3 "2025-08-11T14:24:40Z")
Thanks) But I may have to use an even lower version python, because integrating it ☠ . But downgrading the version of Gradio works))
---
**Author:**  [@system](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fsystem)%5C
**Post date:** [August 12, 2025, 2:25am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fthe-gradio-api-is-not-working%2F166407%2F4 "2025-08-12T02:25:10Z")
Closed on August 12, 2025, 2:25am UTC
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