What should a stream metric regex look like for AWS Addon CloudWatchLogs

[gesa_behrens]

Hello
I need to stream access_logs from aws from different directories such as
/directory/subdirectory1/subdirectory2/subdirectory3/various cryptic numbers/var/log/apache2/access.log.

I would need something like /ecs/service/apache-tls10/PROD-apache-tls10/*/var/log/apache2/access.log because
.*/var/log/apache2/access.log sends to many logs since there are other directories in the log_group starting with a different directory name which we do not need to index.
Reading docs and splunk answers did not point me to a useful example explaining exactly what a 'stream matching regex' should look like. What ever I try I find this entry in internal:
2019-09-05 06:04:01,758 level=ERROR pid=19218 tid=MainThread logger=splunk_ta_aws.modinputs.inspector pos=util.py:call:163 | | message="Failed to execute function=run, error=Traceback (most recent call last):
File "/opt/splunk/etc/apps/Splunk_TA_aws/bin/3rdparty/splunktalib/common/util.py", line 160, in __call_
return func(*args, **kwargs)
File "/opt/splunk/etc/apps/Splunk_TA_aws/bin/splunk_ta_aws/modinputs/inspector/init.py", line 53, in run
do_run()
File "/opt/splunk/etc/apps/Splunk_TA_aws/bin/splunk_ta_aws/modinputs/inspector/init.py", line 30, in _do_run
aiconf.AWSInspectorConf, "aws_inspector", logger)
File "/opt/splunk/etc/apps/Splunk_TA_aws/bin/splunk_ta_aws/common/ta_aws_common.py", line 136, in get_configs
tasks = conf.get_tasks()
File "/opt/splunk/etc/apps/Splunk_TA_aws/bin/splunk_ta_aws/modinputs/inspector/aws_inspector_conf.py", line 60, in get_tasks
_cleanup_checkpoints(tasks, config)
File "/opt/splunk/etc/apps/Splunk_TA_aws/bin/splunk_ta_aws/modinputs/inspector/aws_inspector_conf.py", line 119, in _cleanup_checkpoints
internals = store.get_state("internals")
File "/opt/splunk/etc/apps/Splunk_TA_aws/bin/3rdparty/splunktalib/state_store.py", line 155, in get_state
state = json.load(jsonfile)
File "/opt/splunk/lib/python2.7/json/init.py", line 291, in load
**kw)
File "/opt/splunk/lib/python2.7/json/init_.py", line 339, in loads
return _default_decoder.decode(s)
File "/opt/splunk/lib/python2.7/json/decoder.py", line 364, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/opt/splunk/lib/python2.7/json/decoder.py", line 382, in raw_decode
raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded
"

can anyone provide an example for that please?