R shiny java.lang.RuntimeException: java.security.InvalidKeyException: Illegal key size

Question

When I run my shiny app via RStudio Server, either using the code from local dir or /srv/shiny-server, it runs smoothly, with success.

When I execute the app by calling the endpoint "10....:3838/app1" or by log in via terminal as root and execute the app R script, I get this error "java.lang.RuntimeException: java.security.InvalidKeyException: Illegal key size" .

I get this error when trying to connect to the database, but no idea why it is happening, since the code is the same on local dir and /srv/shiny-server.

I would appreciate any help.

I tried to change permissions of files, like chmod and chown, but nothing happened.

I have also checked the decryption but the files and passwords are the same, it just gets an error when connecting to the DB.