google.api_core.exceptions.ServiceUnavailable: 503 Getting metadata from plugin failed with error: ('invalid_grant: Invalid JWT Signature.', '{"error":"invalid_grant","error_description":"Invalid JWT Signature."}')

[sowmyakavali]

google-api-core 1.17.0
google-auth 1.14.1
google-cloud-vision 1.0.0
python 3.6.9
and my os is ubuntu 18.04
i am trying to extract text from images
while i am running this code

`import` os, io
from google.cloud import vision
import pandas as pd
from google.oauth2 import service_account
credentials = service_account.Credentials. from_service_account_file('silver-catwalk-276005-0d6c98a26db3.json')
client = vision.ImageAnnotatorClient(credentials=credentials)
file_name = 'img0.jpg'  
image_path = f'/home/apiiit-rkv/Desktop/Task, I CAN/codes/{file_name}'

with io.open(image_path, 'rb') as image_file:
    content = image_file.read()
image = vision.types.Image(content=content)
response = client.text_detection(image=image)  # returns TextAnnotation
df = pd.DataFrame(columns=['locale', 'description'])
texts = response.text_annotations
for text in texts:
    df = df.append(
        dict(
            locale=text.locale,
            description=text.description
        ),
        ignore_index=True
    )
print(df['description'][0])

it throwing this error

Traceback (most recent call last):
 File "/home/apiiit-rkv/.local/lib/python3.6/site-packages/google/api_core/grpc_helpers.py", line 57, in error_remapped_callable
   return callable_(*args, **kwargs)
 File "/home/apiiit-rkv/.local/lib/python3.6/site-packages/grpc/_channel.py", line 826, in __call__
   return _end_unary_response_blocking(state, call, False, None)
 File "/home/apiiit-rkv/.local/lib/python3.6/site-packages/grpc/_channel.py", line 729, in _end_unary_response_blocking
   raise _InactiveRpcError(state)
grpc._channel._InactiveRpcError: <_InactiveRpcError of RPC that terminated with:
   status = StatusCode.UNAVAILABLE
   details = "Getting metadata from plugin failed with error: ('invalid_grant: Invalid JWT Signature.', '{"error":"invalid_grant","error_description":"Invalid JWT Signature."}')"
   debug_error_string = "{"created":"@1588564948.414167046","description":"Getting metadata from plugin failed with error: ('invalid_grant: Invalid JWT Signature.', '{"error":"invalid_grant","error_description":"Invalid JWT Signature."}')","file":"src/core/lib/security/credentials/plugin/plugin_credentials.cc","file_line":79,"grpc_status":14}"
>

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
 File "first_project_googleVision.py", line 30, in <module>
   response = client.text_detection(image=image)  # returns TextAnnotation
 File "/home/apiiit-rkv/.local/lib/python3.6/site-packages/google/cloud/vision_helpers/decorators.py", line 101, in inner
   response = self.annotate_image(request, retry=retry, timeout=timeout)
 File "/home/apiiit-rkv/.local/lib/python3.6/site-packages/google/cloud/vision_helpers/__init__.py", line 72, in annotate_image
   r = self.batch_annotate_images([request], retry=retry, timeout=timeout)
 File "/home/apiiit-rkv/.local/lib/python3.6/site-packages/google/cloud/vision_v1/gapic/image_annotator_client.py", line 274, in batch_annotate_images
   request, retry=retry, timeout=timeout, metadata=metadata
 File "/home/apiiit-rkv/.local/lib/python3.6/site-packages/google/api_core/gapic_v1/method.py", line 143, in __call__
   return wrapped_func(*args, **kwargs)
 File "/home/apiiit-rkv/.local/lib/python3.6/site-packages/google/api_core/grpc_helpers.py", line 59, in error_remapped_callable
   six.raise_from(exceptions.from_grpc_error(exc), exc)
 File "<string>", line 3, in raise_from
google.api_core.exceptions.ServiceUnavailable: 503 Getting metadata from plugin failed with error: ('invalid_grant: Invalid JWT Signature.', '{"error":"invalid_grant","error_description":"Invalid JWT Signature."}')

please help me to solve this error

[munkhuushmgl]

@sowmyakavali I was able to use your code to produce the correct results without using panda

I think it is an issue with your JWT or key that you are using.

Also, check your system clock.

import os
import io
from google.cloud import vision
from google.oauth2 import service_account
credentials = service_account.Credentials.from_service_account_file('/Users/user/Downloads/your-project-service-account.json')
client = vision.ImageAnnotatorClient(credentials=credentials)
image_path = f'detect/resources/text.jpg'

with io.open(image_path, 'rb') as image_file:
    content = image_file.read()
image = vision.types.Image(content=content)
response = client.text_detection(image=image)  # returns TextAnnotation
texts = response.text_annotations
for text in texts:
    print(text)

[munkhuushmgl]

@sowmyakavali PTaL googleapis/google-cloud-python#3100 (comment)

[sowmyakavali]

this problem is solved
The vision api took time to activate my project that's it
Thank you

[vamshi-7]

I didn't use the vision API for 2 months. So I redownloaded the JSON key, and it is working now.