web server crashes after upgrade from 7.3.5 to 7.4.3

Hi,

I tried to upgrade Adobe Campaign Classic from 7.3.5 to 7.4.3 as test (base installation is clean)

after this when server is starting I’m getting errors like below in watchdog.log

2026-05-22 15:35:42.484+02	00001968	00001EA4	  1	info	log	Launching task 'web@default' ('nlserver web -noconsole -tracefile:web@default -instance:default -detach -tomcat -autorepair') in a new process
2026-05-22 15:35:47.485+02	00001968	00001EA4	  1	error	log	SRV-810019 The server process 'web@default' (pid=15508) has unexpectedly crashed. It will be restarted. (iRc=-53)
2026-05-22 15:35:47.485+02	00001968	00001EA4	  1	info	log	Launching task 'web@default' ('nlserver web -noconsole -tracefile:web@default -instance:default -detach -tomcat -autorepair') in a new process
2026-05-22 15:35:48.483+02	00001968	00001EA4	  1	error	log	SRV-810019 The server process 'web@default' (pid=1996) has unexpectedly crashed. It will be restarted. (iRc=-53)
2026-05-22 15:35:48.483+02	00001968	00001EA4	  1	info	log	Launching task 'web@default' ('nlserver web -noconsole -tracefile:web@default -instance:default -detach -tomcat -autorepair') in a new process

when I’m trying to start web module with verbose I’m getting

PS C:\Windows\System32\WindowsPowerShell\v1.0> nlserver start web@default -verbose
15:57:22 >   Application server for Adobe Campaign Classic (7.4.3 build 9394@28aaec9 of 03/30/2026)
15:57:22 >   Launching task 'web@default' ('nlserver web -verbose -tracefile:web@default -instance:default -detach -tomcat -autorepair') in a new process
15:57:23 >   Application server for Adobe Campaign Classic (7.4.3 build 9394@28aaec9 of 03/30/2026)
15:57:23 >   Starting Web server module (pid=8004, tid=2788)...
15:57:23 >   Loading configuration for instance 'default'
15:57:23 >   PInstanceSlot not found for Vault token rotate: overwriting iRc to 0
15:57:23 >   Skiping call to vault for refreshing the token
15:57:23 >   Loading configuration for instance 'instance1'
15:57:23 >   Skiping call to vault for refreshing the token
15:57:23 >   IOB-090026 Client Certificate verification in mTLS is restricted
15:57:23 >   Loading proxy details
15:57:23 >   Proxy details loaded
15:57:23 >   Initializing the Java Virtual Machine...
15:57:23 >   Using 'HKEY_LOCAL_MACHINE\SOFTWARE\Neolane\NL_6\CATALINA_HOME'='C:\Adobe\Adobe Campaign Classic v7\tomcat\'
15:57:23 >   Using env 'JVMLIBDIR'='C:\JDK\Temurin_jdk-17.0.19.10-hotspot\bin\server'
15:57:23 >   Library 'C:\JDK\Temurin_jdk-17.0.19.10-hotspot\\bin\server\jvm.dll' loaded from 'C:\JDK\Temurin_jdk-17.0.19.10-hotspot\bin\server\jvm.dll'

and nothing more

thanks in advance for help