NameError: Error fill report: Erro fill internal: net.sf.jasperreports.engine.JRRuntimeException: Error initializing graphic environment.

[bugcy013]

Describe the bug Getting Error when running run.py

NameError: Error fill report: Erro fill internal: net.sf.jasperreports.engine.JRRuntimeException: Error initializing graphic environment.

To Reproduce Steps to reproduce the behavior:

root@cs-ubuntu-0228:~/exemples_report# lsb_release
.git/             .gitignore        README.rst        reports/          requirements.txt  resources/        run.py
root@cs-ubuntu-0228:~/exemples_report# lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.1 LTS
Release:	20.04
Codename:	focal
root@cs-ubuntu-0228:~/exemples_report# java --version
openjdk 18 2022-03-22
OpenJDK Runtime Environment (build 18+36-2087)
OpenJDK 64-Bit Server VM (build 18+36-2087, mixed mode, sharing)
root@cs-ubuntu-0228:~/exemples_report# python3 --version
Python 3.8.10

console prints

root@cs-ubuntu-0228:~/exemples_report# python3 run.py
OpenJDK 64-Bit Server VM warning: Archived non-system classes are disabled because the java.system.class.loader property is specified (value = "org.update4j.DynamicClassLoader"). To use archived non-system classes, this property must not be set
Traceback (most recent call last):
  File "run.py", line 40, in <module>
    example_csv()
  File "run.py", line 33, in example_csv
    pyreportjasper.process_report()
  File "/usr/local/lib/python3.8/dist-packages/pyreportjasper/pyreportjasper.py", line 192, in process_report
    raise error
NameError: Error fill report: Erro fill internal: net.sf.jasperreports.engine.JRRuntimeException: Error initializing graphic environment.