Elasticsearch service fails to start

could not find java in bundled jdk at {$INST_HOME}/atlassian-bitbucket-7.1.0/elasticsearch/jdk/bin/java
There was a problem starting bundled Elasticsearch

Starting Atlassian Bitbucket as the current user

Copying Elasticsearch configuration to {$BITBUCKET_HOME}/shared/search

Setting Elasticsearch configuration to version 3

Starting bundled Elasticsearch
Hint: Run start-bitbucket.sh --no-search to skip starting Elasticsearch
could not find java in bundled jdk at {$INST_HOME}/atlassian-bitbucket-7.1.0/elasticsearch/jdk/bin/java
There was a problem starting bundled Elasticsearch

Bitbucket is being run with a umask that contains potentially unsafe settings.
The following issues were found with the mask "u=rwx,g=rx,o=rx" (0022):
 - Access is allowed to 'others'. It is recommended that 'others' be denied
   all access for security reasons.
The recommended umask for Bitbucket is "u=,g=w,o=rwx" (0027) and can be
configured in _start-webapp.sh

The current open files limit is set to less than 4096
Attempting to increase limit...
Limit increased to 4096 open files

Starting Bitbucket webapp at http://localhost:7990
The Bitbucket webapp has been started.