IDPA Backup agents installation failed at 48% due to timeout

IDPA Backup agents installation failed at 48% due to timeout as seen on Avamar Installation Manager UI:

The Avamar AVI UI can be accessed at the following address:
https://<AVAMAR_IP_ADDRESS_OR_FQDN/avi






Note: This is applicable for IDPA versions 2.3.0 and greater (i.e. 2.3.1, 2.4.1, 2.5). 

SYMPTOMS: 

• On ACM dashboard you will see a spinning wheel for backup agents installation in progress. 
• All backups will go into hung state.

Updating Avamar Client Plugin-Catalog times out for AVE -18.2.0-134_HF310588

admin@: ~/>: netstat -anp|grep 7778 |grep LISTEN
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp        0      0 :::7778                 :::*                    LISTEN      3311/java

2. Kill the process

admin@:~/>: kill -9 3311


3. Prior to starting MCS, perform the following changes in mcserver.xml:

Before:
<entry key="group_scheduler_enabled" value="false" />
After:
<entry key="group_scheduler_enabled" value="true" />



4. Then start up MCS

admin@:~/>: mcserver.sh --start

5. When it is totally up, go to the AVI page retry. i.e.  https://Avamar-IP/avi/avigui.html
After the following steps are performed, we need to execute the below steps on ACM Side
Need to add below steps for ACM dashboard showing AV agents installation is in progress.

1. Create touch file  av_ucd_install_success  in folder /usr/local/dataprotection/var
2. Set idpauser permission on this file, see below command output

ACM:/usr/local/dataprotection/var # chown idpauser:idpauser av_ucd_install_success
ACM:/usr/local/dataprotection/var # ls -la
total 0
drwxr-xr-x 1 idpauser idpauser  62 Oct 13 21:14 .
drwxr-xr-x 1 idpauser idpauser 390 Oct  6 23:16 ..
-rw------- 1 idpauser idpauser   0 Oct 13 21:14 av_ucd_install_success
drwxr-xr-x 1 idpauser idpauser  22 Oct  3 08:52 configmgr
  

6. After that click on refresh dashboard icon to restart dashboard thread.