OSCAL Problem

[ASH-SYSTEMS]

When trying to generate a version, there is an OSCAL related problem reported.
It seems like "import gov.nist.secauto.metaschema.datatypes.DataTypes" in OscalDataTypeHandlerGenerator.xtend fails.

[ERROR] Failed to execute goal org.eclipse.tycho:tycho-compiler-plugin:2.3.0:compile (default-compile) on project dsm.oscal.ext: Compilation failure: Compilation failure:
[ERROR] C:\Users\scmas9\git\TRADES\bundles\dsm.oscal.ext\xtend-gen\dsm\oscal\ext\ItemProviderGenerator.java:[90]
[ERROR] Files.writeString(targetPath, this.generateBaseClassContent(genClass, packageName, baseCustomClassName, imagePath),
[ERROR] ^^^^^^^^^^^
[ERROR] The method writeString(Path, String, StandardOpenOption, StandardOpenOption) is undefined for the type Files
[ERROR] C:\Users\scmas9\git\TRADES\bundles\dsm.oscal.ext\xtend-gen\dsm\oscal\ext\ItemProviderGenerator.java:[99]
[ERROR] Files.writeString(customTargetPath,
[ERROR] ^^^^^^^^^^^
[ERROR] The method writeString(Path, String, StandardOpenOption, StandardOpenOption) is undefined for the type Files
[ERROR] C:\Users\scmas9\git\TRADES\bundles\dsm.oscal.ext\src\dsm\oscal\ext\MetaschemaToEcoreApplication.java:[37]
[ERROR] .transform(List.of(//
[ERROR] ^^
[ERROR] The method of(String, String, String) is undefined for the type List
[ERROR] C:\Users\scmas9\git\TRADES\bundles\dsm.oscal.ext\src\dsm\oscal\ext\MetaschemaToEcoreApplication.java:[49]
[ERROR] ), Path.of(args[0]));
[ERROR] ^^
[ERROR] The method of(String) is undefined for the type Path
[ERROR] C:\Users\scmas9\git\TRADES\bundles\dsm.oscal.ext\xtend-gen\dsm\oscal\ext\OscalDataTypeHandlerGenerator.java:[68]
[ERROR] _xblockexpression = Files.writeString(file, this.generateClassContent(), StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING);
[ERROR] ^^^^^^^^^^^
[ERROR] The method writeString(Path, String, StandardOpenOption, StandardOpenOption) is undefined for the type Files
[ERROR] C:\Users\scmas9\git\TRADES\bundles\dsm.oscal.ext\src\dsm\oscal\ext\DeleteMetaschemaAnnotApplication.java:[46]
[ERROR] Files.walk(Path.of(args[0])).filter(p -> p.getFileName().toString().endsWith("ecore"))
[ERROR] ^^