Went to import a channel. One of the field names was a duplicate: “text_input” was the field name. Renamed it to “text_input_travis” and clicked “Save Settings” Next screen was this error:
/system/index.php?/cp/channels/sets/doImport&set_path=cset/tmp_1509475918
Notice
Undefined index: text_input
ee/EllisLab/ExpressionEngine/Service/ChannelSet/Set.php, line 334
Severity: E_NOTICE Fatal error: Uncaught Error: Call to a member function getId() on null in /chroot/home/hopexper/ee4.hopexperiment.com/html/contentzsystem/ee/EllisLab/ExpressionEngine/Service/ChannelSet/Set.php:335 Stack trace: #0 /chroot/home/hopexper/ee4.hopexperiment.com/html/contentzsystem/ee/EllisLab/ExpressionEngine/Service/ChannelSet/Set.php(249): EllisLab\ExpressionEngine\Service\ChannelSet\Set->assignFieldsToFieldGroups() #1 /chroot/home/hopexper/ee4.hopexperiment.com/html/contentzsystem/ee/EllisLab/ExpressionEngine/Controller/Channels/Sets.php(154): EllisLab\ExpressionEngine\Service\ChannelSet\Set->save() #2 [internal function]: EllisLab\ExpressionEngine\Controller\Channels\Sets->doImport() #3 /chroot/home/hopexper/ee4.hopexperiment.com/html/contentzsystem/ee/EllisLab/ExpressionEngine/Core/Core.php(229): call_user_func_array(Array, Array) #4 /chroot/home/hopexper/ee4.hopexperiment.com/html/contentzsystem/ee/EllisLab/ExpressionEngine/Core/Core.php(109): EllisLab\ExpressionEngine\Core\Core->runController(Array) #5 /chroot/home/hop in /chroot/home/hopexper/ee4.hopexperiment.com/html/contentzsystem/ee/EllisLab/ExpressionEngine/Service/ChannelSet/Set.php on line 335
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