Program does not compiles on Ubuntu correctly?

[Draqun]

Title: Swagger Codegen fails to generate Python client - missing swagger input or config

Description:
When attempting to generate a Python client using Swagger Codegen, the following error occurs: Exception in thread "main" java.lang.RuntimeException: missing swagger input or config!

Command Used

java -jar swagger-codegen-cli.jar generate -i https://poligon.aidevs.pl/swagger/poligon.json -l python -o ./poligon_client

My configuration does not meet the requirements to compile the tool correctly or perhaps there is incorrect behaviour on my side? Please be understanding, I am not familiar with java.


The data:

damian@dgiebas-ubu-i4b-pl ~/t/s/m/s/target (master)> java -jar swagger-codegen-cli.jar generate -i https://poligon.aidevs.pl/swagger/poligon.json -l python -o ./poligon_client
[main] INFO io.swagger.parser.Swagger20Parser - reading from https://poligon.aidevs.pl/swagger/poligon.json
[main] INFO io.swagger.parser.Swagger20Parser - reading from https://poligon.aidevs.pl/swagger/poligon.json
[main] INFO io.swagger.codegen.ignore.CodegenIgnoreProcessor - No .swagger-codegen-ignore file found.
Exception in thread "main" java.lang.RuntimeException: missing swagger input or config!
at io.swagger.codegen.DefaultGenerator.generate(DefaultGenerator.java:766)
at io.swagger.codegen.cmd.Generate.run(Generate.java:307)
at io.swagger.codegen.SwaggerCodegen.main(SwaggerCodegen.java:35)

damian@dgiebas-ubu-i4b-pl ~/t/s/m/s/target (master)> java -jar swagger-codegen-cli.jar generate --help
Exception in thread "main" io.airlift.airline.ParseArgumentsUnexpectedException: Found unexpected parameters: [--help]
at io.airlift.airline.Cli.validate(Cli.java:194)
at io.airlift.airline.Cli.parse(Cli.java:132)
at io.airlift.airline.Cli.parse(Cli.java:108)
at io.airlift.airline.Cli.parse(Cli.java:103)
at io.swagger.codegen.SwaggerCodegen.main(SwaggerCodegen.java:35)

damian@dgiebas-ubu-i4b-pl ~/t/s/m/s/target (master)> java --version
openjdk 21.0.6 2025-01-21
OpenJDK Runtime Environment (build 21.0.6+7-Ubuntu-124.04.1)
OpenJDK 64-Bit Server VM (build 21.0.6+7-Ubuntu-124.04.1, mixed mode, sharing)

damian@dgiebas-ubu-i4b-pl ~/t/s/m/s/target (master)> mvn --version
Apache Maven 3.8.7
Maven home: /usr/share/maven
Java version: 21.0.6, vendor: Ubuntu, runtime: /usr/lib/jvm/java-21-openjdk-amd64
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "6.8.0-57-generic", arch: "amd64", family: "unix"