null Exception

[tillsc]

From https://www.webtrees.net/index.php/en/forum/4-customising/35801-display-complex-all-in-on-tree-with-gvexport#85569

Trying to access array offset on value of type null …/modules_v4/GVExport/functions_dot.php:741
#0 …/modules_v4/GVExport/functions_dot.php(741): Fisharebest\Webtrees\Webtrees::Fisharebest\Webtrees{closure}()
#1 …/modules_v4/GVExport/functions_dot.php(238): vendor\WebtreesModules\gvexport\Dot->printFamily()
#2 …/modules_v4/GVExport/functions_dot.php(184): vendor\WebtreesModules\gvexport\Dot->createDOTDump()
#3 …/modules_v4/GVExport/module.php(470): vendor\WebtreesModules\gvexport\Dot->getDOTDump()
#4 …/modules_v4/GVExport/module.php(275): vendor\WebtreesModules\gvexport\GVExport->createGraphVizDump()
#5 …/modules_v4/GVExport/module.php(206): vendor\WebtreesModules\gvexport\GVExport->saveDOTFile()
#6 …/app/Http/RequestHandlers/ModuleAction.php(88): vendor\WebtreesModules\gvexport\GVExport->postChartAction()
#7 …/app/Http/Middleware/WrapHandler.php(83): Fisharebest\Webtrees\Http\RequestHandlers\ModuleAction->handle()

[Gunnar-GO]

Got the samy beginning error:

Trying to access array offset on value of type null …/modules_v4/GVExport/functions_dot.php:741 #0 …/modules_v4/GVExport/functions_dot.php(741): Fisharebest\Webtrees\Webtrees::Fisharebest\Webtrees\{closure}(8, 'Trying to acces...', '/data/web/1/000...', 741, Array) #1 …/modules_v4/GVExport/functions_dot.php(238): vendor\WebtreesModules\gvexport\Dot->printFamily('F3') #2 …/modules_v4/GVExport/functions_dot.php(184): vendor\WebtreesModules\gvexport\Dot->createDOTDump() #3 …/modules_v4/GVExport/module.php(470): vendor\WebtreesModules\gvexport\Dot->getDOTDump() #4 …/modules_v4/GVExport/module.php(275): vendor\WebtreesModules\gvexport\GVExport->createGraphVizDump(Object(Fisharebest\Webtrees\Tree), Object(Cissee\WebtreesExt\IndividualExt), '/tmp/c4ca4238a0...', true) #5 …/modules_v4/GVExport/module.php(206): vendor\WebtreesModules\gvexport\GVExport->saveDOTFile(Object(Fisharebest\Webtrees\Tree), Object(Cissee\WebtreesExt\IndividualExt), true) #6 …/app/Http/RequestHandlers/ModuleAction.php(88): vendor\WebtreesModules\gvexport\GVExport->postChartAction(Object(Nyholm\Psr7\ServerRequest)) #7 …/app/Http/Middleware/WrapHandler.php(83): Fisharebest\Webtrees\Http\RequestHandlers\ModuleAction->handle(Object(Nyholm\Psr7\ServerRequest)) #8 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\WrapHandler->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #9 …/modules_v4/vesta_classic_look_and_feel/ClassicLAFModule.php(174): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #10 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Cissee\Webtrees\Module\ClassicLAF\ClassicLAFModule->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #11 …/app/Http/Middleware/CheckCsrf.php(75): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #12 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\CheckCsrf->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #13 …/vendor/oscarotero/middleland/src/Dispatcher.php(118): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #14 …/app/Http/Middleware/Router.php(166): Middleland\Dispatcher->dispatch(Object(Nyholm\Psr7\ServerRequest)) #15 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\Router->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #16 …/app/Http/Middleware/BootModules.php(62): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #17 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\BootModules->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #18 …/app/Http/Middleware/LoadRoutes.php(76): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #19 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\LoadRoutes->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #20 …/app/Http/Middleware/UseTransaction.php(45): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #21 …/vendor/illuminate/database/Concerns/ManagesTransactions.php(29): Fisharebest\Webtrees\Http\Middleware\UseTransaction::Fisharebest\Webtrees\Http\Middleware\{closure}(Object(Illuminate\Database\MySqlConnection)) #22 …/app/Http/Middleware/UseTransaction.php(46): Illuminate\Database\Connection->transaction(Object(Closure), 3) #23 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseTransaction->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #24 …/app/Http/Middleware/DoHousekeeping.php(74): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #25 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\DoHousekeeping->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #26 …/app/Http/Middleware/UseTheme.php(70): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #27 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseTheme->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #28 …/app/Http/Middleware/CheckForMaintenanceMode.php(51): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #29 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\CheckForMaintenanceMode->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #30 …/app/Http/Middleware/UseLanguage.php(70): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #31 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseLanguage->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #32 …/app/Http/Middleware/UseSession.php(71): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #33 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseSession->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #34 …/app/Http/Middleware/UpdateDatabaseSchema.php(58): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #35 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UpdateDatabaseSchema->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #36 …/app/Http/Middleware/UseDebugbar.php(67): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #37 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseDebugbar->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #38 …/app/Http/Middleware/UseDatabase.php(117): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #39 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseDatabase->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #40 …/app/Http/Middleware/BadBotBlocker.php(222): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest)) #41 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\BadBotBlocker->process(Object(Nyholm\Psr7\ServerRequest), Object(Middleland\Dispatcher)) #42 …/app/Http/Middleware/CompressResponse.php(75): Middleland\Dispatcher->handle(Object(Nyholm\Psr7\ServerRequest))

[schuco]

Torven posted in the webtrees forum he got it working:
To get it working I commented out lines 741, 742, 743 in the file functions_dot.php
The lines now look like this:
// $func="date_localisation_{$lang_short_cut[$LANGUAGE]}";
// if (!function_exists($func))
// $func="DefaultDateLocalisation";

My understanding of PHP is fairly poor so don't ask me what I've changed.
You can test it here if you like:
zeffertt.uk/webtrees/
Cheers, Torven

[tillsc]

Was unused code from previous maintainers... So commenting this out was actually a very good solution :)

I removed it to fix the problem permanently