No feature flags loaded after upgrade from 5.6.7 to 5.7.0

[yuzawa-san]

Is this a support request?
No

Describe the bug
No feature flags loaded after upgrade from 5.6.7 to 5.7.0. There is an exception in the log (below).

To reproduce
Instantiate a client in version 5.6.7 and then instantiate at client in 5.7.0.
I am using a custom DataStore implementation, but the exception does not appear to be coming from there.

Expected behavior
The client should be filled with the feature flags.

Logs

2022-02-04 17:33:18,751 INFO okhttp-eventsource-stream-[]-0 com.launchdarkly.sdk.server.LDClient.DataSource info - Connected to EventSource stream.
2022-02-04 17:33:18,752 ERROR okhttp-eventsource-events-[]-0 com.launchdarkly.sdk.server.LDClient.DataSource onMessage - LaunchDarkly service request failed or received invalid data: com.launchdarkly.sdk.server.StreamProcessor$StreamInputException: com.launchdarkly.sdk.server.interfaces.SerializationException: java.lang.RuntimeException: Failed to invoke public com.launchdarkly.sdk.LDValue() with no args
2022-02-04 17:33:18,754 INFO okhttp-eventsource-stream-[]-0 com.launchdarkly.sdk.server.LDClient.DataSource info - Waiting 20760 milliseconds before reconnecting...

SDK version
5.7.0

Language version, developer tools
Java

OS/platform
Amazon Linux 2 x86_64

Additional context
5.6.7 dependencies:

5.7.0 dependencies:

is that launchdarkly-java-sdk-common causing issues? it appears there is a duplicate com.launchdarkly.sdk.LDValue in there:

this is not present in 5.6.7.

[gwhelanLD]

Hi @yuzawa-san,

Thanks for reporting this issue. There was an issue with the packaging of the 5.7.0 SDK release we discovered yesterday that causes this error. We have an internal PR to address this issue, which we will release as a 5.7.1 release as soon as it has been reviewed and testing has been completed.

Sorry for the inconvenience,
@gwhelanLD

[gwhelanLD]

This should be resolved with https://github.com/launchdarkly/java-server-sdk/releases/tag/5.7.1.

Thanks!
@gwhelanLD

[yuzawa-san]

This fix appears to work. Thank you!