Correct error message

Author: umbynos

cli/arguments/arguments.go

@@ -44,7 +44,7 @@ func CheckFlagsMandatory(command *cobra.Command, flagNames ...string) {
 		if command.Flag(flagName).Changed {
 			continue
 		} else {
-			feedback.Errorf(tr("Please use also %s flag when using %s flags at the same time.", "--"+flagName, "--"+strings.Join(flagNames, " "+tr("and")+" --")))
+			feedback.Errorf(tr("Flag %[1]s is mandatory when used in conjunction with flag %[2]s.", "--"+flagName, "--"+strings.Join(flagNames, " "+tr("and")+" --")))
 			os.Exit(errorcodes.ErrBadArgument)
 		}
 	}

test/test_compile_part_4.py

@@ -471,7 +471,7 @@ def test_compile_with_fake_secure_boot_core(run_command, data_dir):
         ]
     )
     assert res.failed
-    assert "Please use also --sign-key flag when using --keys-keychain" in res.stderr
+    assert "Flag --sign-key is mandatory when used in conjunction with flag --keys-keychain" in res.stderr
 
     # Verifies compilation works with secure boot enabled and when overriding the sign key and encryption key used
     keys_dir = Path(data_dir, "keys_dir")