Weblogic domain not start with " Error while loading the class.. taking default Sysout Logger imp"

Issue:

Previous shutdown was not graceful and WLS_DIAGNOSTICS000000.DAT was not removed and was causing the issue.

Solution:

Remove the WLS_DIAGNOSTICS000000.DAT from C:\Oracle\Middleware\user_projects\domains\BPMSOADomain\servers\AdminServer\data\store\diagnostics

directory and restart the server.