[QUESTION] Failed installation

CheckList

[x] The Title and The Log Title are setted correctly.
[x] Clarified about my environment.
[x] Code block is used for the log.

Title

My Environment: Windows 10 home 22h2

Calibre: `6.12`

Kindle: `n/a`

DeDRM: `7.21`

Log

Tried to install via zip file and got this:

calibre, version 6.12.0 ERROR: Unhandled exception: InvalidPlugin:The plugin in 'C:\Users\ZannakLissa\Downloads\DeDRM_tools_7.2.1.zip' is invalid. It does not contain a top-level init.py file

calibre 6.12 embedded-python: True Windows-10-10.0.19045-SP0 Windows ('64bit', 'WindowsPE') ('Windows', '10', '10.0.19045') Python 3.10.1 Windows: ('10', '10.0.19045', 'SP0', 'Multiprocessor Free') Interface language: en_GB Successfully initialized third party plugins: Amazon.com Multiple Countries (1, 0, 0) && Barnes & Noble (1, 4, 0) && Goodreads (1, 7, 2) && KePub Input (3, 6, 3) && KePub Metadata Reader (3, 4, 3) && KePub Metadata Writer (3, 4, 3) && KePub Output (3, 6, 3) && Kobo Books (1, 9, 2) && Kobo Utilities (2, 16, 6) && KoboTouchExtended (3, 6, 3) && Manage Series (1, 5, 0) && Perrypedia (1, 6, 0) && Search The Internet (1, 10, 0) && ePub Extended Metadata {Writer} (0, 8, 1) && ePub Extended Metadata {Reader} (0, 8, 1) && ePub Extended Metadata (0, 8, 1) Traceback (most recent call last): File "calibre\gui2\preferences\plugins.py", line 325, in add_plugin File "calibre\customize\ui.py", line 480, in add_plugin File "calibre\customize\ui.py", line 64, in load_plugin File "calibre\customize\zipplugin.py", line 298, in load File "calibre\customize\zipplugin.py", line 393, in _locate_code calibre.customize.InvalidPlugin: The plugin in 'C:\Users\ZannakLissa\Downloads\DeDRM_tools_7.2.1.zip' is invalid. It does not contain a top-level init.py file

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apprenticeharper / DeDRM_tools