R Apache Error: package 'rJava' could not be loaded

I sucessfully installed RApache on my Debian 11 server. The following R script runs flawlessly when being executed via URL/Apache:

y = rnorm(100)
print(y) 

Sadly, another script with rJava/RJDBC embedded causes an internal server error:

Sys.setenv(LD_LIBRARY_PATH = "/usr/lib/jvm/default-java/bin/java")
options(java.parameters = c("-Djdk.tls.client.protocols=TLSv1.2"))

library(RJDBC)

# Verbindungsinformationen
server <- "172.20.10.84\\SESQL"
database <- "SEMESS"
username <- " "
password <- " "

# JDBC-Treiber laden 
jdbc_driver <- "/etc/mssql-jdbc-12.2.0.jre11.jar"
drv <- JDBC(driverClass = "com.microsoft.sqlserver.jdbc.SQLServerDriver", classPath = jdbc_driver)

# Verbindung aufbauen
conn <- dbConnect(drv, sprintf("jdbc:sqlserver://%s;databaseName=%s;encrypt=true;trustServerCertificate=true", server, database), username, password)

dbDisconnect(conn)

The script runs smoothly when being excuted with Rscript test.R.

When making an sudo tail -f /var/log/apache2/error.log it shows:

libjvm.so: cannot open shared object file: No such file or directory Error: package 'rJava' could not be loaded

Any hints for me for fixing this problem? I already tried to add SetEnv LD_LIBRARY_PATH with the Java Library Path to my Apache 000-default.conf.

Any help is highly appreciated.

it turns out that adding

dyn.load("/usr/lib/jvm/java-11-openjdk-amd64/lib/server/libjvm.so")

in the R script on the very top solved the problem.