How do I re-establish a link to G-mail. It was broken when I upgraded to MacOS mojave

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#1

How do I re-establish my link to G-mail? It failed when I installed MacOs Mojave.

How do I reconnect so I can email documents?
#2

What has this to do with LibreOffice? Seems to be the same question (albeit different words) as this one-> I cannot sign in. New user. help!.
Please either post relevant information or find the site this question is truly meant for.

#3

Closing as duplicate; for actual question see → How do I reconnect so I can email documents?

#4

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