Fix the “The package could not be installed. PCLZIP_ERR_BAD_FORMAT” WordPress Error

This is pretty straightforward, you’ll see this error when updating or installing a plugin.

The package could not be installed. PCLZIP_ERR_BAD_FORMAT

Basically the file WordPress is trying to download is either corrupt or you don’t have the PHP curl module installed. So simply install it, for Ubuntu this is:

apt-get install php-curl

or

apt-get install php7.3-curl

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http://groups.google.com/group/linux.debian.bugs.dist/browse_thread/thread/3de22bc415d3da02?pli=1