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I am very new to the ubuntu-21.04 ,when i try to do sudo apt update i am getting some error ,How to resolve that issue please help me to fix this issue.i am little bit confusing which things i need to DELETE

E: The repository 'https://packages.sury.org/php hirsute Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
Sravani
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    Does this answer your question? [What can I do if a repository/PPA does not have a Release file?](https://askubuntu.com/questions/866901/what-can-i-do-if-a-repository-ppa-does-not-have-a-release-file) – guiverc Sep 15 '21 at 11:17
  • A quick look and that package source support Debian systems, not Ubuntu. 3rd party sources are your responsibility to validate before adding, ie. can they be trusted, secure, won't impact or harm your system and will work. Ubuntu 21.04 isn't a Debian system so that source doesn't help you - you need to find another. – guiverc Sep 15 '21 at 11:18
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    In your picture; you need to remove the one that matches the error in your pasted message - it should be easy to detect (ie. remove the tick and it'll be disabled; I'd remove it; but disabling it should be enough to correct your error condition). – guiverc Sep 15 '21 at 11:20

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