How can I get back access to the backend of TYPO3 when fluidpages are causing an error on backend and frontend? - typo3

I got to work on a Typo3 page and I have to say I'm at the very beginning if it comes to TYPO3.
So I wanted to fix a bug and updated the plugin "fluidpages" from version 4.1.0 (I guess) to 4.3. That cause the "Oops, an error occurred!" in the backend and frontend, so I dont have access from that side. I still have the FTP login for the website. The version of TYPO3 is 8.7.18.
The errorcode I get is that one:
Could not analyse class:
"FluidTYPO3\Flux\Configuration\ConfigurationManager" maybe not loaded
or no autoloader?
Class FluidTYPO3\Flux\Configuration\ConfigurationManager does not exist
So does anyone know what I need to do?
From my research I think I need to update another plugins to make it back to work? And can I update them just by uploading them through FTP?
Thanks in advance!
Edit: After I tried to get the old version of the plugin running, I'm getting this error code from the log file:
Mon, 17 Feb 2020 22:59:56 +0100 [ALERT] request="fec23f8baf6dc" component="TYPO3.CMS.Frontend.ContentObject.Exception.ProductionExceptionHandler": Oops, an error occurred! Code: 2020021722595594039a4d - {"exception":"TYPO3\CMS\Extbase\Mvc\Exception: The default controller for extension \"Flux\" and plugin \"Page\" can not be determined. Please check for TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin() in your ext_localconf.php.

You can enter the Install Tool via https://example.org/typo3/install.php and start with Check for broken extensions. If that doesn't yield the extension in question, you can always manually change the PackageStates.php file and remove the extension you want to unload. Afterwards you should flush all caches through the Install Tool.
In the long term you should consider a few things:
Use a local development environment which mirrors your production environment. You can safely perform all steps without any risk here before deploying.
Use a deployment strategy/tool which allows for rollbacks. This allows you to quickly revert to a working version of your instance in case all other checks have failed. A simple but flexible solution is Deployer, you'll need SSH for this though.

Have you tried dumping autoload from Install Tool? Generally, it would help for the class not loaded problem. Otherwise, you may want to check the log at typo3/temp/var/log/ and find the errors in code.

Related

What's the best way to upgrade from umbraco 7.6 to 7.15.1 (including db upgrade)

I am trying to upgrade the site from v 7.6 to v. 7.15.1.
I have done the upgrade on localhost which included updating the db.
Now I transferred my files from localhost o the test site and on there I am getting an error in log:
ERROR Umbraco.Core.UmbracoApplicationBase - An unhandled exception occurred
System.Data.SqlClient.SqlException (0x80131904): Invalid object name 'umbracoUserLogin'.
and I can't login to the backoffice.
It seems to be looking for umbracoUserLogin on test while it doesn't exist yet because on test the db is not updated yet.
How to update the db on test in this case while the files have already been updated on localhost and transferred to test site?
I have done 2 umbraco upgrades recently; one is from 7.5.7 to 7.13.1 and the recent one is from 7.13.1 to 7.15.1.
During my upgrade; I have seen this problem and fix in this issue can help you for your problem(and I didn't see this problem again after doing the upgrade again, but this time checking all the auto changing files and accepting them one at a time-see details below for this) but coming back to your question; "What's the best way to upgrade from umbraco 7.6 to 7.15.1(including db upgrade)"; here are the steps that you should follow;
Create a backup for your project and your umbraco db before you start. If you are using Git, then things will be super easy for this.
Open up Nuget Package Manager for your Umbraco project and do the package upgrade using the Nuget Package Manger window or the consol. Search for UmbracoCms version 7.15.1 for your case.
Once you start doing the upgrade, you will see some popup windows that will ask you to approve some auto file changes(including some config files changes). As you don't want to lose some of your pre-upgrade settings, don't accept them all or discard them all, check all of them one by one, and as a general rule; if you don't have any custom changes for those files, then simply approve the change, otherwise, check your changes and make sure you don't loose anything and discard some of these file changes as a result.
Once you're done with your UmbracoCms upgrade(which will automatically do some dependency package upgrades), build your project, make sure all is looking good then go to your local project's umbraco back-office url, this will trigger the rest of the umbraco upgrade process and simply complete the upgrade steps by following the screens- at this point your umbraco db changes will be done automatically and it is possible that you might have some issues with some old corrupt cached files, if this happens, then simply delete App_Data/TEMP files and App_Data umbraco.config file and try again. If you see some other problems during the installation, check the logs(browser developer tools can be handy to understand the problems in this case), and fix them one at a time. It is possible that you don'T need some of your old web.config settings and they might cause some issues, simply comment out those lines and see if this will fix some of the issues.
Once you are done with you local upgrade, deploy your code to your testing environment, and go to the umbraco url of your test environment and follow the screens to complete the installation for your testing environment. If you see any problems, please check my notes for step 4 above.
Do your umbraco upgrade for other testing environments(QA, UAT, Training etc) and complete your umbraco upgrade tests. Once the tests are done, then you are ready to go live. After the live deployment, you will have to complete the umbraco upgrade one last time, but this time for the live system.
Always get your back-ups for each environment before you do the upgrade, so you will be ready to rollback your changes if things go wrong(which might happen as you're doing a big umbraco upgrade).
Final note; there are some good articles for this, please take a look to understand the process better. Good luck!

Typo3 broken: Frontend / Backend blank pages and no errors even after restoring backup

I was fixing things on a not well-maintained typo3 installation and it resulted in blank pages of frontend, backend and install tool.
I wanted to fix extensions because the powermail-extension was not working anymore even after updating to latest compatible version (tried emptying cache and database compare).
I deactivated an extension "compatibility6" to see if it was interfering and since then all pages have been blank including Install Manager. I reactivated the extension via PackageStates.php, emptied the cache but it did not change anything. I was not able to see any error messages even though I set the parameter in LocalConfiguration.php which made it hard to try to find out what is wrong. Then I restored a backup using vmware. Still, backend and frontend are blank.
I am using Apache and Typo3 7.6.23.
I do not know what might be causing the problem and would like to know what else to look for?
It means you have a PHP error there. The first thing would be to examine logs. If you see anything like "class not found", then your next action would be composer dumpautoload --no-dev.
Long time ago I had an article about blank pages in TYPO3 FE. Not up to date but still can be helpful: https://www.dmitry-dulepov.com/2009/03/blank-empty-page-in-typo3.html
Dmitry already wrote it: you have an error.
In production environment nothing is shown for not revealing any information about your system.
So the only information about the error can be found in the error log of your webserver.
What can you do to get more information about your error?
Enter the install tool and switch to develop mode. This will also enable deprecation logging into a file. Try to avoid filling your system with deprecation warnings by disabling deprecation logging.
Disable the default exceptionhandler by adding this to your typoscript setup:
config.contentObjectExceptionHandler = 0
Now you should see a call stack instead of blank screens.
Be aware that this might reveal confidential information from your system.
because of this you should use a copy of the live-system.

TYPO3 backend form module gives error when creating forms

I'm currently running TYPO3 version 8.7.18 and running a site_package that was made by using the site package builder: link
Whenever I try to add a form by using the default backend forms module I get the default message Oops, an error occurred! along with that the following error
TYPO3\CMS\Form\Domain\Configuration\FormDefinition\Converters\AddHmacDataConverter not found
Searching for the issue I get several hits on the Gitlab but these do not provide any solution.
Along with this setup, I've added the forms module as a static include in my top-level template.
do you have a composer installation or an extension manager build up?
If a class is not found you may need to rebuild the autoloader information.
My error turned out to be caused by a corrupt installation. I've had to upload the file AddHmacDataConverter.php in the following path /public_html/typo3/sysext/form/Classes/Domain/Configuration/FormDefinition/Converters. A very weird error indeed.
For those that came here with the same error, make sure to check that folder. Apart from that add the news as a static inclusion in your top domain. You could also follow #Bernd Wilke's idea which s to disable the extension, clear all system caches (and additionally remove typo3/temp/autoload and then active the extension again.

Typo3 6.0: Install Tool Error Message

In conjunction with the failed installation of an extension (yag), the install tool is no longer available with the following error message:
PHP Fatal error: Class '\\tx_install_session' not found in /var/typo3_src-6.0.2/typo3/sysext/core/Classes/Utility/GeneralUtility.php on line 4158
Any suggestions are welcome.
Ok, I'm one step further.
Assuming the backend login works, it helps to clear the cache via the flash button.
Which leads me to the question: Is there a way to do this in the shell in case the BE login is broken?
Remove/comment the bad extension in the LocalConfiguration.php file and then remove content of /typo3temp/Cache/ directory.
It will allow you restore to the state before the malformed installation.

Typo3 4.7.0 update breaks my FE login?

I've updated my Typo3 from 4.5.5 to 4.7.0 and I get several deprecated errors:
ERROR: Content Element type "login" has no rendering definition!
call to undefined error in t3lib_div::view_array
fail to include class.t3lib_htmlmail.php
The install tool gives me "typo3/ext/ directory not writable" but I've the correct right. I've even allow all?????
When I select a CType Element in the BE it give me this warning: PHP Warning
PHP Warning: Invalid argument supplied for foreach() in /var/www/typo3_src-4.7.0/t3lib/l10n/parser/class.t3lib_l10n_parser_llphp.php line 95
The solution for 2. is to use the new class t3lib_utility_debug but what is with the other errors?
Edit: 1. http://lists.typo3.org/pipermail/typo3-english/2011-November/078129.html
Edit 2: The solution for the missing class t3lib_htmlmail is to include another class t3lib_mail_message: require_once(PATH_t3lib .'mail/class.t3lib_mail_message.php');
You solved allready: install system extension "felogin"
you solved allready: use t3lib_utility_debug
check where the error is from. Often it is helpfull to search for that file in typo3conf/temp_*.
You could check your filesystem, if your webserver is allowed to write to typo3/ext/. I guess, it is not. But you do not need to. Usually you install extensions to typo3conf/ext/.
Update your language files via the extension manager.
Well, i know it is to late now, but for all others wo think about an update: just activate the deprecation log in the isntall toll and fix that problems first!
Updating from 4.5.X to 4.7.x broke my felogin as well. The reason was that there has been a local extension installation that has been of higher priority than the system one. So if you suffer the same update issue, check for an local installation of felogin in "typo3conf/ext" - and delete it in case it is there. This solved my problem!