Fatal error: Uncaught Error: Call to undefined function Symfony\Polyfill\Mbstring\iconv_strlen() in /var/www/onlineshop.knx.org/lib/external/packages/symfony/polyfill-mbstring/Mbstring.php:522 Stack trace: #0 /var/www/onlineshop.knx.org/lib/external/packages/symfony/polyfill-mbstring/bootstrap80.php(57): Symfony\Polyfill\Mbstring\Mbstring::mb_strlen() #1 /var/www/onlineshop.knx.org/lib/external/packages/sentry/sentry/src/Util/PrefixStripper.php(21): mb_strlen() #2 /var/www/onlineshop.knx.org/lib/external/packages/sentry/sentry/src/FrameBuilder.php(72): Sentry\FrameBuilder->stripPrefixFromFilePath() #3 /var/www/onlineshop.knx.org/lib/external/packages/sentry/sentry/src/StacktraceBuilder.php(62): Sentry\FrameBuilder->buildFromBacktraceFrame() #4 /var/www/onlineshop.knx.org/lib/external/packages/sentry/sentry/src/StacktraceBuilder.php(45): Sentry\StacktraceBuilder->buildFromBacktrace() #5 /var/www/onlineshop.knx.org/lib/external/packages/sentry/sentry/src/Client.php(540): Sentry\StacktraceBuilder->buildFromException() #6 /var/www/onlineshop.knx.org/lib/external/packages/sentry/sentry/src/Client.php(287): Sentry\Client->addThrowableToEvent() #7 /var/www/onlineshop.knx.org/lib/external/packages/sentry/sentry/src/Client.php(181): Sentry\Client->prepareEvent() #8 /var/www/onlineshop.knx.org/lib/external/packages/sentry/sentry/src/Client.php(173): Sentry\Client->captureEvent() #9 /var/www/onlineshop.knx.org/lib/external/packages/sentry/sentry/src/State/Hub.php(142): Sentry\Client->captureException() #10 /var/www/onlineshop.knx.org/lib/external/packages/tigron/skeleton-error/lib/Skeleton/Error/Handler/SentrySdk.php(78): Sentry\State\Hub->captureException() #11 /var/www/onlineshop.knx.org/lib/external/packages/tigron/skeleton-error/lib/Skeleton/Error/Handler.php(166): Skeleton\Error\Handler\SentrySdk->handle() #12 [internal function]: Skeleton\Error\Handler->handle_exception() #13 {main} thrown in /var/www/onlineshop.knx.org/lib/external/packages/symfony/polyfill-mbstring/Mbstring.php on line 522