We had this same issue after upgrade to 4.7.0 - Splunk Support advised it was a bug in this version and provided the following fix, which worked for us -
Edit splunk/etc/apps/DA-ESS-ThreatIntelligence/bin/configuration_checks/confcheck_failed_threat_download.py as below:
--- confcheck_failed_threat_download.old.py
+++ confcheck_failed_threat_download.py
@@ -33,7 +33,7 @@
messages = []
- job = splunk.search.dispatch(search_string, sessionKey=session_key, earliest=earliest)
+ job = splunk.search.dispatch(search_string, sessionKey=session_key, earliest_time=earliest)
while elapsed < srch_timeout:
if job.isDone:
if job.resultCount > 0 or job.eventCount > 0:
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