ERROR: [Wed Jun 24 02:58:56 UTC 2020] Could not fetch branches from source com.cloudbees.jenkins.plugins.bitbucket.BitbucketSCMNavigator::https://bitbucket.org::username::repo
java.lang.NullPointerException
	at com.cloudbees.jenkins.plugins.bitbucket.client.pullrequest.BitbucketPullRequestValueRepository.<init>(BitbucketPullRequestValueRepository.java:51)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at com.fasterxml.jackson.databind.introspect.AnnotatedConstructor.call(AnnotatedConstructor.java:124)
	at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.createFromObjectWith(StdValueInstantiator.java:283)
Caused: com.fasterxml.jackson.databind.exc.ValueInstantiationException: Cannot construct instance of `com.cloudbees.jenkins.plugins.bitbucket.client.pullrequest.BitbucketPullRequestValueRepository`, problem: `java.lang.NullPointerException`
 at [Source: (StringReader); line: 1, column: 2569] (through reference chain: com.cloudbees.jenkins.plugins.bitbucket.client.pullrequest.BitbucketPullRequests["values"]->java.util.ArrayList[0]->com.cloudbees.jenkins.plugins.bitbucket.client.pullrequest.BitbucketPullRequestValue["source"])
	at com.fasterxml.jackson.databind.exc.ValueInstantiationException.from(ValueInstantiationException.java:47)
	at com.fasterxml.jackson.databind.DeserializationContext.instantiationException(DeserializationContext.java:1754)
	at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.wrapAsJsonMappingException(StdValueInstantiator.java:491)
	at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.rewrapCtorProblem(StdValueInstantiator.java:514)
	at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.createFromObjectWith(StdValueInstantiator.java:285)
	at com.fasterxml.jackson.databind.deser.ValueInstantiator.createFromObjectWith(ValueInstantiator.java:229)
	at com.fasterxml.jackson.databind.deser.impl.PropertyBasedCreator.build(PropertyBasedCreator.java:202)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeUsingPropertyBased(BeanDeserializer.java:424)
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1310)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:331)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:164)
	at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:129)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:293)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:156)
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:285)
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:244)
	at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:27)
	at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:129)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:293)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:156)
	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4482)
	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3447)
	at com.cloudbees.jenkins.plugins.bitbucket.JsonParser.toJava(JsonParser.java:55)
	at com.cloudbees.jenkins.plugins.bitbucket.JsonParser.toJava(JsonParser.java:47)
	at com.cloudbees.jenkins.plugins.bitbucket.client.BitbucketCloudApiClient.getPullRequests(BitbucketCloudApiClient.java:302)
Caused: java.io.IOException: I/O error when parsing response from URL: https://api.bitbucket.org/2.0/repositories/username/repo/pullrequests?page=1&pagelen=50
	at com.cloudbees.jenkins.plugins.bitbucket.client.BitbucketCloudApiClient.getPullRequests(BitbucketCloudApiClient.java:304)
	at com.cloudbees.jenkins.plugins.bitbucket.BitbucketSCMSource$1.create(BitbucketSCMSource.java:554)
[...]

[...]
            "source": {
                "branch": {
                    "name": "branch-from-fork"
                },
                "commit": null,
                "repository": null
            },
[...]