Before upgrading, it is advised to read the Upgrade Guide.
References: pull request 14852
References: pull request 14852
References: #14855, pull request 14858
References: pull request 14847
References: pull request 14844
References: #14533, pull request 14838
References: #14471, #14857, pull request 14863
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References: pull request 14525
References: #12865, pull request 14759
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References: pull request 14653, pull request 14758
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References: #14522, pull request 14557
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References: #13987, pull request 14458, pull request 14487, pull request 14517, pull request 14678
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References: #14310, pull request 14822
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References: pull request 14471
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References: #14327, pull request 14419
References: pull request 14404