Internal server error updating database

[maricaantonacci]

Trying to delete a deployment ~10s after its submission caused the following error:

{"code":500,"title":"Internal Server Error","message":"\n### Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLTransactionRollbackException: Deadlock found when trying to get lock; try restarting transaction\n### The error may involve org.flowable.engine.impl.persistence.entity.ExecutionEntityImpl.updateExecution-Inline\n### The error occurred while setting parameters\n### SQL: update ACT_RU_EXECUTION SET REV_ = ?, IS_ACTIVE_ = ? where ID_ = ? and REV_ = ?\n### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLTransactionRollbackException: Deadlock found when trying to get lock; try restarting transaction"}