There are some changes in 5.10.0 that if I understand correctly there are already new fixes for.
See https://answers.atlassian.com/questions/35752150, and try updating to the new HipChat plugin linked from Krystian Brazulewicz's answer.
On 31 May, a GDPR-related change went live in the Bitbucket Cloud API that resulted in users not being able to create or edit Bitbucket Cloud Linked repositories in Bamboo. This API update removed t...
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