WebLogic Managed server fails to start

Using WebLogic 12.1.2 on a Oracle Linux 6 server, I am attempting to start managed server managedServer1 by calling the managed startup script below.

./startManagedWebLogic.sh managedServer1 http://adminServerURL:7001

When ran, the server fails to start with the following error.

<Critical> <WebLogicServer> <BEA-000362> <Server failed. Reason:
There are 1 nested errors:
weblogic.management.ManagementException: Booting as admin server, but servername, managedServer1, does not match the admin server name, admin
    at weblogic.management.provider.internal.RuntimeAccessService.start(RuntimeAccessService.java:67)
    at weblogic.t3.srvr.ServerServicesManager.startService(ServerServicesManager.java:461)
    at weblogic.t3.srvr.ServerServicesManager.startInStandbyState(ServerServicesManager.java:166)
    at weblogic.t3.srvr.T3Srvr.initializeStandby(T3Srvr.java:895)
    at weblogic.t3.srvr.T3Srvr.startup(T3Srvr.java:572)
    at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:471)
    at weblogic.Server.main(Server.java:74)

I have checked multiple online resources of other users getting the same error (ex. Can't start managed server in Oracle Weblogic 10.3.2) however, they are all related to Node Manager. In my case, I am not using Node Manager and trying to start the server manually via startup script. Also, this error happens for any managed server I try to start. If I put an invalid admin url, the error still occurs. Which tells me the issue is happening before it even attempts to connect to the admin server. So far I have done the following troubleshooting steps.

• Recreated managed server's boot.properties file and verified it has the correct permissions.
• Checked config.xml file but can not find any red flags. Admin server starts without any issues.
• Delete DOMAIN_HOME/servers/managedServer1 folder and let the folders be recreated when trying to start the managed server. Did not expect this to work since it generates this error for all managed server names I supply to the startup script.

Does anyone have any idea or suggestions on anything else I could check that may be the cause of this issue?

Thank You.