The error happens when I was testing if npm works better.<br /><br />I just generated a recipe and a shrinkwrap using the command:<br />- devtool add "npm://registry.npmjs.org;package=express-ws;version=5.0.2;"<br />Then I built it with:<br />- bitbake express-ws<br />And this error happened:<br />ERROR: express-ws-5.0.2-r0 do_create_spdx: Error executing a python function in exec_func_python() autogenerated:<br /><br />The stack trace of python calls that resulted in this exception/failure was:<br />File: 'exec_func_python() autogenerated', lineno: 2, function: &lt;module&gt;<br />&nbsp;&nbsp;&nbsp;&nbsp; 0001:<br />&nbsp;*** 0002:do_create_spdx(d)<br />&nbsp;&nbsp;&nbsp;&nbsp; 0003:<br />File: '/home/twigabecomp/yocto/literal/debug/poky/meta/classes/create-spdx-2.2.bbclass', lineno: 598, function: do_create_spdx<br />&nbsp;&nbsp;&nbsp;&nbsp; 0594:<br />&nbsp;&nbsp;&nbsp;&nbsp; 0595:&nbsp;&nbsp;&nbsp; doc.packages.append(recipe)<br />&nbsp;&nbsp;&nbsp;&nbsp; 0596:&nbsp;&nbsp;&nbsp; doc.add_relationship(doc, "DESCRIBES", recipe)<br />&nbsp;&nbsp;&nbsp;&nbsp; 0597:<br />&nbsp;*** 0598:&nbsp;&nbsp;&nbsp; add_download_packages(d, doc, recipe)<br />&nbsp;&nbsp;&nbsp;&nbsp; 0599:<br />&nbsp;&nbsp;&nbsp;&nbsp; 0600:&nbsp;&nbsp;&nbsp; if process_sources(d) and include_sources:<br />&nbsp;&nbsp;&nbsp;&nbsp; 0601:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; recipe_archive = deploy_dir_spdx / "recipes" / (doc.name + ".tar.zst")<br />&nbsp;&nbsp;&nbsp;&nbsp; 0602:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; with optional_tarfile(recipe_archive, archive_sources) as archive:<br />File: '/home/twigabecomp/yocto/literal/debug/poky/meta/classes/create-spdx-2.2.bbclass', lineno: 438, function: add_download_packages<br />&nbsp;&nbsp;&nbsp;&nbsp; 0434:<br />&nbsp;&nbsp;&nbsp;&nbsp; 0435:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if f.method.supports_srcrev():<br />&nbsp;&nbsp;&nbsp;&nbsp; 0436:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; uri = uri + "@" + f.revisions[name]<br />&nbsp;&nbsp;&nbsp;&nbsp; 0437:<br />&nbsp;*** 0438:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if f.method.supports_checksum(f):<br />&nbsp;&nbsp;&nbsp;&nbsp; 0439:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for checksum_id in CHECKSUM_LIST:<br />&nbsp;&nbsp;&nbsp;&nbsp; 0440:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if checksum_id.upper() not in oe.spdx.SPDXPackage.ALLOWED_CHECKSUMS:<br />&nbsp;&nbsp;&nbsp;&nbsp; 0441:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; continue<br />&nbsp;&nbsp;&nbsp;&nbsp; 0442:<br />File: '/home/twigabecomp/yocto/literal/debug/poky/bitbake/lib/bb/fetch2/__init__.py', lineno: 1406, function: supports_checksum<br />&nbsp;&nbsp;&nbsp;&nbsp; 1402:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Is localpath something that can be represented by a checksum?<br />&nbsp;&nbsp;&nbsp;&nbsp; 1403:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; """<br />&nbsp;&nbsp;&nbsp;&nbsp; 1404:<br />&nbsp;&nbsp;&nbsp;&nbsp; 1405:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; # We cannot compute checksums for directories<br />&nbsp;*** 1406:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if os.path.isdir(urldata.localpath):<br />&nbsp;&nbsp;&nbsp;&nbsp; 1407:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return False<br />&nbsp;&nbsp;&nbsp;&nbsp; 1408:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return True<br />&nbsp;&nbsp;&nbsp;&nbsp; 1409:<br />&nbsp;&nbsp;&nbsp;&nbsp; 1410:&nbsp;&nbsp;&nbsp; def recommends_checksum(self, urldata):<br />File: '/usr/lib/python3.10/genericpath.py', lineno: 42, function: isdir<br />&nbsp;&nbsp;&nbsp;&nbsp; 0038:# can be true for the same path on systems that support symlinks<br />&nbsp;&nbsp;&nbsp;&nbsp; 0039:def isdir(s):<br />&nbsp;&nbsp;&nbsp;&nbsp; 0040:&nbsp;&nbsp;&nbsp; """Return true if the pathname refers to an existing directory."""<br />&nbsp;&nbsp;&nbsp;&nbsp; 0041:&nbsp;&nbsp;&nbsp; try:<br />&nbsp;*** 0042:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; st = os.stat(s)<br />&nbsp;&nbsp;&nbsp;&nbsp; 0043:&nbsp;&nbsp;&nbsp; except (OSError, ValueError):<br />&nbsp;&nbsp;&nbsp;&nbsp; 0044:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return False<br />&nbsp;&nbsp;&nbsp;&nbsp; 0045:&nbsp;&nbsp;&nbsp; return stat.S_ISDIR(st.st_mode)<br />&nbsp;&nbsp;&nbsp;&nbsp; 0046:<br />Exception: TypeError: stat: path should be string, bytes, os.PathLike or integer, not NoneType<br /><br />ERROR: Logfile of failure stored in: /home/twigabecomp/yocto/literal/debug/build/tmp/work/core2-64-poky-linux/express-ws/5.0.2-r0/temp/log.do_create_spdx.3703234<br />ERROR: Task (/home/twigabecomp/yocto/literal/debug/build/workspace/recipes/express-ws/express-ws_5.0.2.bb:do_create_spdx) failed with exit code '1'<br /><br /><br />Knowing that urldata = {'donestamp': None, 'needdonestamp': False, 'localfile': '', 'localpath': None, 'lockfile': None, 'mirrortarballs': [], 'basename': None, 'basepath': None, 'type': 'npmsw', 'host': '', 'path': '/home/twigabecomp/yocto/literal/debug/build/workspace/recipes/express-ws/express-ws/npm-shrinkwrap.json', 'user': '', 'pswd': '', 'parm': OrderedDict(), 'date': '20230725', 'url': 'npmsw:///home/twigabecomp/yocto/literal/debug/build/workspace/recipes/express-ws/express-ws/npm-shrinkwrap.json', 'setup': False, 'names': ['default'], 'method': &lt;bb.fetch2.npmsw.NpmShrinkWrap object at 0x7f50d8c9d600&gt;, 'shrinkwrap_file': '/home/twigabecomp/yocto/literal/debug/build/workspace/recipes/express-ws/express-ws/npm-shrinkwrap.json', 'dev': False, 'deps': [{'url': 'https://registry.npmjs.org/ws/-/ws-7.5.9.tgz;downloadfilename=npm2/ws-7.5.9.tgz;sha512sum=17e3fd26297b52248a4a4a692220fde1d374ec0c2f162c6f2c88f53a0d5197d18632e362a499d5f49ce30fa5eeaa601e8acc06bd498d2e3af9705b97c0d4bbed', 'localpath': '/home/twigabecomp/yocto/literal/debug/build/downloads/npm2/ws-7.5.9.tgz', 'extrapaths': ['/home/twigabecomp/yocto/literal/debug/build/downloads/npm2/ws-7.5.9.tgz.resolved'], 'destsuffix': 'node_modules/ws', 'unpack': True}], 'proxy': &lt;bb.fetch2.Fetch object at 0x7f50d30ff250&gt;, 'md5_name': 'md5sum', 'md5_expected': None, 'sha256_name': 'sha256sum', 'sha256_expected': None, 'sha1_name': 'sha1sum', 'sha1_expected': None, 'sha384_name': 'sha384sum', 'sha384_expected': None, 'sha512_name': 'sha512sum', 'sha512_expected': None, 'ignore_checksums': False}<br /><br />I think this is a known issue of how npm dependencies are represented, because the real localpath(s) is urldata.deps[i].localpath<br /><br />Mohamed BELOUARGA<br />Thanks