Unable to run apt-get update due to invalid signature and no release files - package

I was recently given this kind of error on my server.
Has anyone experienced this kind of behavior? I am unable to install new packages because of not being up to date. All the errors can be seen in the photo.
errors thrown
Any help appreciated

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Getting "Invalid command 'Proxy_....'" but all the proxy modules show "already enabled"

I'm working on setting up SearXNG using apache....ugh....btw, if anybody has any good instructions on this (besides the developer's website) I'd be very grateful.
In any case, after I configure the .conf file and restart apache2, it fails with errors saying this proxy module or that is an invalid command. From all the forums I've looked at, the suggestion was to a2enmod the modules it is complaining about, plus a few others. I've done that but apache keeps complaining about them.
I've not found a thread yet that speaks of this particular issue. Any ideas?
Thanks

KDS -- Error in final launch sequence

I am using Kinetis Design Studio v 3.0 and am trying to launch a C application on my FRDM-K64 board. The project builds just fine; however, when I try to debug, I get this error:
Error in final launch sequence
Failed to execute MI command:
-exec-run
Error message from debugger back end:
Don't know how to run. Try "help target".
Don't know how to run. Try "help target".
I haven't a clue why this is happening. Other projects (such as the "bubble" example) launch just fine, and I am using basically the same launch configuration. I'm using Segger J-Link, although I tried using OpenOCD as well and got the same message. Any ideas of how to fix this?
I solved the problem--apparently my software needed to be updated. So if anyone is getting the same error, be sure you have tried checking for updates.

Cloud9 error when running project "Error retrieving pid file"

I have been playing around with the Cloud9 web-based IDE learning PHP
Today I went to run my project, and was presented with this error:
(20014)Internal error: AH00058: Error retrieving pid file /home/ubuntu/lib/apache2/run/apache2.pid
AH00059: Remove it before continuing if it is corrupted.
I have since been able to migrate my work using XAMPP, but would like to resolve my Cloud9 issue. Does anyone know how to resolve this in the Cloud9 environment?
Well, I feel rather dumb...resolved the issue myself by using Cloud9's terminal to navigate to the directory and then removed the corrupt file.
I got Same type problem & solution as follows. Hope someone may helpfull
Problem:
Started apache2
(20014)Internal error: AH00058: Error retrieving pid file
/home/ubuntu/lib/apache2/run/apache2.pid
AH00059: Remove it before continuing if it is corrupted.
Solution:
sudo rm /home/ubuntu/lib/apache2/run/apache2.pid then
sudo /home/ubuntu/lib/apache2/run/apache2.pid restart

Error while installing Bugzilla

I am trying to install Bugzilla on centos. Everything in the terminal went fine. But when I try to access Bugzilla through my browser, it is returning the error as shown below.
This XML file does not appear to have any style information associated with it.
The document tree is shown below.
<D:error><C:error/><m:human-readable errcode="2">
Could not open the requested SVN filesystem
</m:human-readable></D:error>"
Can any one help me to solve this issue?
Thanks in advance
The above error rises when there is port conflict between SVN and other applications.
We need to configure virtual host inorde3r to avoid port conflict between svn and other applications.

How to upgrade cakephp from 1.3 to 2.1?

I'm a newbie in cakephp, I'm trying to upgrade cakephp to the latest version.
I install the fresh cakephp 1.3 on my computer and the upgrade it to cakephp 2.1.
I use shell to upgrade, but after I run 'upgrade all' command, I saw two error:
Warning Error: chmod(): Operation not permitted in [/var/www/cakephp-1.3/lib/Cake/Utility/Folder.php, line 639]
Warning Error: touch(): Utime failed: Operation not permitted in [/var/www/cakephp-1.3/lib/Cake/Utility/Folder.php, line 640]
I think it has upgraded complete. Because I see the message from terminal like this:
Done updating /var/www/cakephp-1.3/app/Console/cake.php
Done updating /var/www/cakephp-1.3/app/Console/Command/AppShell.php
Running components
Running exceptions
Then I refresh my app and I got some errors:
http://flic.kr/p/bwUpwY
Then I delete 'cake' directory, and the error message has changed:
http://flic.kr/p/bKP7Te
So now I don't know what to do next, because I did many ways but still not make it work.
So anybody please tell me what I did wrong and how can I upgrade cakephp successful.
Thanks in advance.
This looks like you have permissions issues on some of the directories that the CakePHP migration script expects to be writable.
This could lead to the migration failing on some parts and leaving a partially broken install after it completes.

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