import eikon as ek

ek.set_app_key('*****')

no error, but

df = ek.get_timeseries('6752.T')

got socket hang up

below is log in apiproxy

================

[2021-11-01 06:54:21.994|1|data-api|0|ERROR] [UdfClientExceptionLoggerDecorator]An error occurred while processing the request: socket hang up

[2021-11-01 06:54:21.997|1|data-api|0|ERROR] socket hang up

[2021-11-01 06:54:21.998|1|data-api|0|ERROR] Error: socket hang up

at TLSSocket.onHangUp (_tls_wrap.js:1111:19)

at TLSSocket.g (events.js:291:16)

at emitNone (events.js:91:20)

at TLSSocket.emit (events.js:185:7)

at endReadableNT (_stream_readable.js:974:12)

at _combinedTickCallback (internal/process/next_tick.js:74:11)

at process._tickCallback (internal/process/next_tick.js:98:9)

[2021-11-01 06:54:22.000|1|data-api|0|ERROR] [HandshakeApplicationKeyCheckMiddleware]An error occurred while checking application key during handshake

[2021-11-01 06:54:22.002|1|data-api|0|ERROR] socket hang up

[2021-11-01 06:54:22.003|1|data-api|0|ERROR] Error: socket hang up

at TLSSocket.onHangUp (_tls_wrap.js:1111:19)

at TLSSocket.g (events.js:291:16)

at emitNone (events.js:91:20)

at TLSSocket.emit (events.js:185:7)

at endReadableNT (_stream_readable.js:974:12)

at _combinedTickCallback (internal/process/next_tick.js:74:11)

at process._tickCallback (internal/process/next_tick.js:98:9)