This file does not seem to be a valid module zip

[Doha MOH]

am trying to upload a module manually 

It gives me the same error: "Oops... Upload failed."

And: "This file does not seem to be a valid module zip"

[endriu107]

Maybe module is double packed in zip?

[innovacy]

The error you're encountering, "This file does not seem to be a valid module zip," usually occurs when PrestaShop is unable to recognize the uploaded file as a valid module archive. Here are some common issues and their respective solutions:

1. Incorrect file format: Ensure that the file you are trying to upload is in the ZIP format. PrestaShop only accepts module files in this format. If your file is in another format, such as RAR or TAR, convert it to a ZIP file using a file archiver like 7-Zip or WinRAR.

2. Corrupted or incomplete ZIP file: The uploaded file might be corrupted or incomplete. Try downloading the module again from its original source, and then upload the new file to PrestaShop.

3. Module structure issue: Ensure that the module files are structured correctly within the ZIP archive. The module's main PHP file should be in the root of the archive, not inside a subfolder. For example, if your module is named 'examplemodule', the main PHP file should be 'examplemodule.php' and located at the root of the ZIP file.

4. File size limit: Some server configurations might have a limit on the maximum upload file size. Check your server's settings (e.g., in the php.ini file) and increase the 'upload_max_filesize' and 'post_max_size' if necessary. After making changes, restart your web server and try uploading the module again.

5. File permissions: Ensure that the proper file permissions are set on your server for the '/modules' directory. You may need to set the permissions to '755' or '775' depending on your server configuration.

6. Compatibility issues: Make sure that the module is compatible with your PrestaShop version. If the module is designed for a different version of PrestaShop, it may not be recognized as a valid module.

If none of these solutions resolves the issue, consider reaching out to the module's developer for further assistance, as there could be a specific issue with the module itself.