tomcat 7.0.53 error

[Philippe Couas]

Hi, I want migrate from tomcat 7.0.52 to 7.0.53. My tomcat is launched in 
standalone mode from command line (linux level3)Currently i have a servlet that 
create image to disk and only with last version i have following error 
message"Exception in thread "http-bio-8080-exec-10" java.lang.InternalError: 
Can't connect to X11 window server using ':0.0' as the value of the DISPLAY 
variable."Same servlet running perfect with previous version. RegardsPhil