Can someone help me on below issue please ? IS failing to start on both nodes.

ehcache.log:
[ERROR] | Could not fetch configuration data from 2 different configuration sources. The sources we tried were: the server at ‘wm1:9510’, and the server at ‘wm2:9510’. Fetch attempt duration: 60 seconds.

To correct this problem specify a valid configuration location using the -f/–config command-line options.

server.log:
[ISS.0017.0001E] An error was encountered parsing SoftwareAG-IS-PE.xml: Unable to load class net.sf.ehcache.terracotta.ExpressEnterpriseTerracottaClusteredInstanceFactory. Initial cause was java.lang.RuntimeException: com.tc.config.schema.setup.ConfigurationSetupException:

Could not fetch configuration data from 2 different configuration sources. The sources we tried were: the server at ‘wm1:9510’, and the server at ‘wm2:9510’. Fetch attempt duration: 60 seconds.

To correct this problem specify a valid configuration location using the -f/–config command-line options.

. See the Integration Server error log for the full stack trace.
2018-07-22 17:27:55 BST [ISS.0025.0009C] Integration Server could not initialize the cache manager. Stopping Integration Server initialization. Use the server log and error log to diagnose and correct the problem.
2018-07-22 17:27:56 BST [ISS.0014.0005I] Shutting down server. com.softwareag.osgi.is.launcher.ISLauncher

The error is normal and can be fixed, start the Terracotta server nodes and make sure you have copied the valid license keys at \SoftwareAG\common\conf once this is up IS will start up without any issues.

Refer terracotta logs for more details.