Katalon: Custom keyword working when executing on Chrome but not on Firefox

Question

I have this custom keyword that waits until a file is downloaded and then deletes the file, the thing is that in chrome works okay but when I execute in firefox I get an error.

    @Keyword
public verifyDownloadedFile2(String downloadPath, String fileName, timeOut) {
    int counter = 0
    boolean fileExist = new File(downloadPath + fileName).exists()
            
    while(!fileExist == true) {
        if(counter != timeOut) {
            WebUI.delay(1)
            fileExist = new File(downloadPath + fileName).exists()
            counter++
        }
        else if(counter == timeOut){
            throw new Exception("File was not downloaded within" + timeOut + " seconds.")
        }   
    }
    
    File dir = new File(downloadPath);
    File[] dirContents = dir.listFiles();

    if (dirContents.length > 0) {
        for (int i = 0; i < dirContents.length; i++) {
            dirContents[i].delete();
        }
    }
    
    assert fileExist == true
}

This is the error:

=============== ROOT CAUSE ===================== Caused by: org.codehaus.groovy.runtime.metaclass.MissingMethodExceptionNoStack: No signature of method: windows.interactions.deleteFile2() is applicable for argument types: (java.lang.String, java.lang.String, java.lang.Integer) values: [F:\Downloads\Katalon_Studio_Windows_64-8.1.0\Data\Temp, ...]