Selecting openstreetmap map provider throws "undefined index: provider"

[billyonthemountain]

WT Version: 2.0.0-beta.1 (upgraded manually from 1.7.14)
PHP Version : 7.2.13

Undefined index: provider
#0 …/app/Http/Controllers/Admin/MapProviderController.php(48): Fisharebest\Webtrees\Webtrees::Fisharebest\Webtrees{closure}(8, 'Undefined index...', '/volume1/web/we...', 48, Array)
#1 [internal function]: Fisharebest\Webtrees\Http\Controllers\Admin\MapProviderController->mapProviderSave(Object(Fisharebest\Webtrees\Http\Request))
#2 …/app/Application.php(45): ReflectionMethod->invoke(Object(Fisharebest\Webtrees\Http\Controllers\Admin\MapProviderController), Object(Fisharebest\Webtrees\Http\Request))
#3 …/app/Http/Middleware/RequestRouter.php(68): Fisharebest\Webtrees\Application->dispatch(Object(Fisharebest\Webtrees\Http\Controllers\Admin\MapProviderController), 'mapProviderSave')
#4 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\RequestRouter->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#5 …/app/Module/HitCountFooterModule.php(141): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#6 …/app/Http/Middleware/ModuleMiddleware.php(70): Fisharebest\Webtrees\Module\HitCountFooterModule->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#7 …/app/Http/Middleware/ModuleMiddleware.php(75): class@anonymous->handle(Object(Fisharebest\Webtrees\Http\Request))
#8 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\ModuleMiddleware->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#9 …/app/Http/Middleware/BootModules.php(58): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#10 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\BootModules->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#11 …/app/Http/Middleware/UseTransaction.php(44): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#12 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseTransaction->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#13 …/app/Http/Middleware/CheckCsrf.php(63): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#14 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\CheckCsrf->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#15 …/app/Http/Middleware/DoHousekeeping.php(76): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#16 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\DoHousekeeping->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#17 …/app/Http/Middleware/UseTheme.php(70): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#18 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseTheme->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#19 …/app/Http/Middleware/UseLocale.php(51): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#20 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseLocale->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#21 …/app/Http/Middleware/UseTree.php(59): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#22 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseTree->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#23 …/app/Http/Middleware/UseSession.php(58): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#24 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseSession->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#25 …/app/Http/Middleware/UseFilesystem.php(49): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#26 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseFilesystem->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#27 …/app/Http/Middleware/UseCache.php(44): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#28 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseCache->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#29 …/app/Http/Middleware/UpdateDatabaseSchema.php(56): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#30 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UpdateDatabaseSchema->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#31 …/app/Http/Middleware/UseDebugbar.php(64): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#32 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseDebugbar->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#33 …/app/Http/Middleware/UseDatabase.php(85): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#34 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\UseDatabase->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#35 …/app/Http/Middleware/ReadConfigIni.php(62): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#36 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\ReadConfigIni->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#37 …/app/Http/Middleware/CheckForMaintenanceMode.php(49): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#38 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\CheckForMaintenanceMode->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#39 …/app/Http/Middleware/HandleExceptions.php(54): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#40 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\HandleExceptions->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#41 …/app/Http/Middleware/EmitResponse.php(52): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#42 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\EmitResponse->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#43 …/app/Http/Middleware/PhpEnvironment.php(46): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#44 …/vendor/oscarotero/middleland/src/Dispatcher.php(136): Fisharebest\Webtrees\Http\Middleware\PhpEnvironment->process(Object(Fisharebest\Webtrees\Http\Request), Object(Middleland\Dispatcher))
#45 …/vendor/oscarotero/middleland/src/Dispatcher.php(118): Middleland\Dispatcher->handle(Object(Fisharebest\Webtrees\Http\Request))
#46 …/index.php(44): Middleland\Dispatcher->dispatch(Object(Fisharebest\Webtrees\Http\Request))
#47 {main}