René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"LZ4 decompession failed","articleBody":"**Code**\n```python\nimport os\nimport UnityPy\n\n\nUnityPy.config.FALLBACK_UNITY_VERSION = '2022.3.52f1'\n\nenv = UnityPy.load('avgbg_assets_bg0001_q_15caadfac7a047db4ea676ea62806d56.bundle')\nfor obj in env.objects:\n    print(obj.type.name)\nprint('End')\n```\n\n**Error**\n```\nC:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python310\\lib\\site-packages\\UnityPy\\files\\BundleFile.py:526: UnityVersionFallbackWarning: No valid Unity version found, defaulting to UnityPy.config.FALLBACK_UNITY_VERSION (2022.3.52f1)\n  version_str = config.get_fallback_version()\nTraceback (most recent call last):\n  File \"E:\\code\\unity_unpack\\test.py\", line 7, in \u003cmodule\u003e\n    env = UnityPy.load('avgbg_assets_bg0001_q_15caadfac7a047db4ea676ea62806d56.bundle')\n  File \"C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python310\\lib\\site-packages\\UnityPy\\environment.py\", line 63, in __init__\n    self.load_file(arg)\n  File \"C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python310\\lib\\site-packages\\UnityPy\\environment.py\", line 152, in load_file\n    f = parse_file(reader, self, name=stream_name, typ=typ, is_dependency=is_dependency)\n  File \"C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python310\\lib\\site-packages\\UnityPy\\helpers\\ImportHelper.py\", line 141, in parse_file\n    f = files.BundleFile(reader, parent, name=name, is_dependency=is_dependency)\n  File \"C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python310\\lib\\site-packages\\UnityPy\\files\\BundleFile.py\", line 46, in __init__\n    m_DirectoryInfo, blocksReader = self.read_fs(reader)\n  File \"C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python310\\lib\\site-packages\\UnityPy\\files\\BundleFile.py\", line 174, in read_fs\n    b\"\".join(\n  File \"C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python310\\lib\\site-packages\\UnityPy\\files\\BundleFile.py\", line 175, in \u003cgenexpr\u003e\n    self.decompress_data(\n  File \"C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python310\\lib\\site-packages\\UnityPy\\files\\BundleFile.py\", line 511, in decompress_data\n    CompressionHelper.DECOMPRESSION_MAP[comp_flag](compressed_data, uncompressed_size),\n  File \"C:\\Users\\user\\AppData\\Local\\Programs\\Python\\Python310\\lib\\site-packages\\UnityPy\\helpers\\CompressionHelper.py\", line 94, in decompress_lz4\n    return lz4.block.decompress(data, uncompressed_size)\n_block.LZ4BlockError: Decompression failed: corrupt input or insufficient space in destination buffer. Error code: 33627\n```\n\n**Bug**\nLib should load file, but raises an exception\n\n**To Reproduce**\n- a copy of the file that causes the problem: https://drive.google.com/file/d/1RGDOKK8aX119fpFJ8Jhz2JpnWTkrWDDD/view?usp=sharing\n- following data:\n  - Python version: 3.10.11\n  - UnityPy version: 1.24.1\n","author":{"url":"https://github.com/smpial","@type":"Person","name":"smpial"},"datePublished":"2025-12-16T15:40:59.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/353/UnityPy/issues/353"}