Knowledge Document: iManager and UMC presents a blank screen instead of login after update to OES 24.1.1

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Environment

OES 2018
OES 2023
OES 24.1.1
iManager 3.2.6

Situation

OES server is upgraded from either OES 2018 or OES 2023 to OES 24.1.1.  
When attempting to login to iManager, a blank screen is shown instead of the login screen

Resolution

This issue has been reported to development

Workarounds
The following options can be used to work around the problem until a fix is made available 

Option 1.  The package ecj and be backrev'd with the version of ecj on the previous version's ISO, by using the command:

zypper in -f ecj-X.XXX.XX.rpm

EXAMPLE:  zypper in -f ecj-4.18-150200.3.6.4

Option 2.  Alternately, the rpm can be extracted to a custom location using rpm2cpio and the following commands:

- Make a new directory for the ecj packages files.  

mkdir /oes-ecj

- Change to the new directory

cd /oes-ecj

- Extract the files from the ecj package

rpm2cpio ecj--4.18-150200.3.6.4.rpm | cpio -idmv

- Create a new symbolic link for jasper-jdt.jar pointing to the custom location

Change the link in /usr/share/java/tomcat for jasper-jdt.jar to the new location.

rm /usr/share/java/tomcat/jasper-jdt.jar

ln -s /oes-ecj/usr/share/java/ecj/ecj.jar /usr/share/java/tomcat/jasper-jdt.jar

- Restart iManager

stop and start novell-tomcat

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