Internal server error when Jenkins tries to fetch branches

Started
[Wed Dec 06 10:41:58 EST 2017] Starting branch indexing...
Connecting to https://bitbucket.org using <redacted>
Repository type: Git
Looking up redacted/redacted for branches
ERROR: [Wed Dec 06 10:42:32 EST 2017] Could not fetch branches from source <redacted>
com.cloudbees.jenkins.plugins.bitbucket.api.BitbucketRequestException: HTTP request error. Status: 500: Internal Server Error.
{"type": "error", "error": {"message": "Internal server error", "id": "2c410f812040454a97b5332bcfe155dd"}}
	at com.cloudbees.jenkins.plugins.bitbucket.client.BitbucketCloudApiClient.getRequest(BitbucketCloudApiClient.java:599)
	at com.cloudbees.jenkins.plugins.bitbucket.client.BitbucketCloudApiClient.getBranches(BitbucketCloudApiClient.java:318)
	at com.cloudbees.jenkins.plugins.bitbucket.BitbucketSCMSource$2.create(BitbucketSCMSource.java:559)
	at com.cloudbees.jenkins.plugins.bitbucket.LazyIterable.iterator(LazyIterable.java:57)
	at com.cloudbees.jenkins.plugins.bitbucket.BitbucketSCMSource.retrieveBranches(BitbucketSCMSource.java:745)
	at com.cloudbees.jenkins.plugins.bitbucket.BitbucketSCMSource.retrieve(BitbucketSCMSource.java:573)
	at jenkins.scm.api.SCMSource._retrieve(SCMSource.java:355)
	at jenkins.scm.api.SCMSource.fetch(SCMSource.java:265)
	at jenkins.branch.MultiBranchProject.computeChildren(MultiBranchProject.java:634)
	at com.cloudbees.hudson.plugins.folder.computed.ComputedFolder.updateChildren(ComputedFolder.java:276)
	at com.cloudbees.hudson.plugins.folder.computed.FolderComputation.run(FolderComputation.java:165)
	at jenkins.branch.MultiBranchProject$BranchIndexing.run(MultiBranchProject.java:978)
	at hudson.model.ResourceController.execute(ResourceController.java:97)
	at hudson.model.Executor.run(Executor.java:421)
[Wed Dec 06 10:42:32 EST 2017] Finished branch indexing. Indexing took 33 sec
FATAL: Failed to recompute children of <redacted>
com.cloudbees.jenkins.plugins.bitbucket.api.BitbucketRequestException: HTTP request error. Status: 500: Internal Server Error.
{"type": "error", "error": {"message": "Internal server error", "id": "2c410f812040454a97b5332bcfe155dd"}}
	at com.cloudbees.jenkins.plugins.bitbucket.client.BitbucketCloudApiClient.getRequest(BitbucketCloudApiClient.java:599)
	at com.cloudbees.jenkins.plugins.bitbucket.client.BitbucketCloudApiClient.getBranches(BitbucketCloudApiClient.java:318)
	at com.cloudbees.jenkins.plugins.bitbucket.BitbucketSCMSource$2.create(BitbucketSCMSource.java:559)
	at com.cloudbees.jenkins.plugins.bitbucket.LazyIterable.iterator(LazyIterable.java:57)
	at com.cloudbees.jenkins.plugins.bitbucket.BitbucketSCMSource.retrieveBranches(BitbucketSCMSource.java:745)
	at com.cloudbees.jenkins.plugins.bitbucket.BitbucketSCMSource.retrieve(BitbucketSCMSource.java:573)
	at jenkins.scm.api.SCMSource._retrieve(SCMSource.java:355)
	at jenkins.scm.api.SCMSource.fetch(SCMSource.java:265)
	at jenkins.branch.MultiBranchProject.computeChildren(MultiBranchProject.java:634)
	at com.cloudbees.hudson.plugins.folder.computed.ComputedFolder.updateChildren(ComputedFolder.java:276)
	at com.cloudbees.hudson.plugins.folder.computed.FolderComputation.run(FolderComputation.java:165)
	at jenkins.branch.MultiBranchProject$BranchIndexing.run(MultiBranchProject.java:978)
	at hudson.model.ResourceController.execute(ResourceController.java:97)
	at hudson.model.Executor.run(Executor.java:421)
Finished: FAILURE