Hello Warren,
Looking at the logs, you seem to be referencing a SSL certificate that's
nowhere to be found:
nginx: [emerg] cannot load certificate
"/etc/letsencrypt/live/collabora.princelaw.com/fullchain.pem":
BIO_new_file() failed (SSL: error:02001002:system library:fopen:No such
file or
** Tags removed: need-duplicate-check
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https://bugs.launchpad.net/bugs/1930221
Title:
package nginx-core 1.18.0-6ubuntu2.2 failed to install/upgrade:
installed nginx-core package