Error messages

What does the message "Could not find package..." mean?
Problem The Composer installation of an extension in Magento 2 fails. The following error occurs: Could not find package ... at any version for you...
Di, 29 Okt, 2019 um 10:35 VORMITTAGS
Why does "no such file or directory" appear when executing Composer?
Problem When trying to execute the following Composer command composer config repositories.VENDOR /path/to/some/package/ this error appears: .....
Mi, 11 Jul, 2018 um 1:58 NACHMITTAGS
What does "TypeError: ... is not a function" mean?
This means that a JavaScript function couldn't be found. Maybe customized templates are being used and not all required JavaScript files are loade...
Mi, 21 Mär, 2018 um 9:47 VORMITTAGS
What does "Class ... not found" mean?
Problem The following error occurs: PHP Fatal error: Uncaught Error: Class ... not found Cause This problem often occurs when a Magento extension has...
Di, 11 Dez, 2018 um 3:43 NACHMITTAGS
Why are PHP Exceptions (Fatal Error) not written to the log files?
Problem It is suspected that a PHP Exception (Fatal Error) occurs. However, no error message is visible in the browser. In the usual log files of the webse...
Di, 20 Aug, 2019 um 8:47 VORMITTAGS
What does the error "main.CRITICAL: Broken reference: No element found..." mean?
Problem After installing a Magento 2 module, this error occurs in the checkout: main.CRITICAL: Broken reference: No element found with ID 'checkout...
Do, 18 Apr, 2019 um 11:19 VORMITTAGS
What does the message "Can't use method return value in write context" mean?
Problem When executing Cronjobs, the following error occurs: Can't use method return value in write context in [...] Cause This message occurs i...
Do, 24 Aug, 2017 um 10:13 VORMITTAGS
Summary of PHP errors and solutions
A very helpful summary of common PHP errors with solutions can be found here: Reference - What does this error mean in PHP?
Mo, 8 Feb, 2021 um 11:45 VORMITTAGS