Hello. Sorry, but my English is very bad. I have tried the example by copying it and I get this error. any ideas? I'm using Ubuntu 22.04 and QB64 2.1 Thank you very much. 
Hello.
Sorry, but my English is very bad. I have tried the example by copying it and I get this error. any ideas?
I'm using Ubuntu 22.04 and QB64 2.1
Thank you very much.