runtime error

pcore/_backends/sync.py", line 205, in connect_tcp with map_exceptions(exc_map): File "/usr/local/lib/python3.10/contextlib.py", line 153, in __exit__ self.gen.throw(typ, value, traceback) File "/usr/local/lib/python3.10/site-packages/httpcore/_exceptions.py", line 14, in map_exceptions raise to_exc(exc) from exc httpcore.ConnectError: [Errno -2] Name or service not known The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/home/user/app/app.py", line 19, in <module> df= read_data() File "/home/user/app/app.py", line 15, in read_data response = client.table('Customer_purchase_dataset').select("*").execute() File "/usr/local/lib/python3.10/site-packages/postgrest/_sync/request_builder.py", line 58, in execute r = self.session.request( File "/usr/local/lib/python3.10/site-packages/httpx/_client.py", line 827, in request return self.send(request, auth=auth, follow_redirects=follow_redirects) File "/usr/local/lib/python3.10/site-packages/httpx/_client.py", line 914, in send response = self._send_handling_auth( File "/usr/local/lib/python3.10/site-packages/httpx/_client.py", line 942, in _send_handling_auth response = self._send_handling_redirects( File "/usr/local/lib/python3.10/site-packages/httpx/_client.py", line 979, in _send_handling_redirects response = self._send_single_request(request) File "/usr/local/lib/python3.10/site-packages/httpx/_client.py", line 1015, in _send_single_request response = transport.handle_request(request) File "/usr/local/lib/python3.10/site-packages/httpx/_transports/default.py", line 232, in handle_request with map_httpcore_exceptions(): File "/usr/local/lib/python3.10/contextlib.py", line 153, in __exit__ self.gen.throw(typ, value, traceback) File "/usr/local/lib/python3.10/site-packages/httpx/_transports/default.py", line 86, in map_httpcore_exceptions raise mapped_exc(message) from exc httpx.ConnectError: [Errno -2] Name or service not known

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