After installing LetsEncrypt the plugin gives an error "Couldn't open /root/.cpanel/letsencrypt_tos_cache"

Symptoms

When accessing the Manage AutoSSL screen in WHM, the Let's Encrypt plugin throws the following error:

Failed to load information for the AutoSSL module “LetsEncrypt”: Couldn't open /root/.cpanel/letsencrypt_tos_cache: No such file or directory at /var/cpanel/perl/Cpanel/SSL/Auto/Provider/LetsEncrypt/ToSCache.pm line 114.

Description

This error can occur due to a missing reference to a Let's Encrypt Terms of Service cache file. 

Workaround

Recreating the empty file will allow the plugin to proceed:

1. Log into your server via SSH as the root user
2. Run the following command to create the file with the expected contents:

   echo "https://letsencrypt.org/documents/LE-SA-v1.3-September-21-2022.pdf" > /root/.cpanel/letsencrypt_tos_cache