Crash on reloading from Central server not right after configuring it

[lognaturel]

Software versions

Briefcase v1.17.4

Problem description

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at org.opendatakit.briefcase.ui.reused.transfer.sourcetarget.source.Aggregate.storeSourcePrefs(Aggregate.java:88)
	at org.opendatakit.briefcase.ui.pull.PullPanel.lambda$new$2(PullPanel.java:76)
	at org.opendatakit.briefcase.ui.reused.transfer.sourcetarget.SourceOrTargetPanel.lambda$triggerOnSelect$0(SourceOrTargetPanel.java:111)
	at java.util.ArrayList.forEach(ArrayList.java:1257)
	at org.opendatakit.briefcase.ui.reused.transfer.sourcetarget.SourceOrTargetPanel.triggerOnSelect(SourceOrTargetPanel.java:111)
	at org.opendatakit.briefcase.ui.reused.transfer.sourcetarget.SourceOrTargetPanel.reload(SourceOrTargetPanel.java:86)
	at java.util.ArrayList.forEach(ArrayList.java:1257)
	at org.opendatakit.briefcase.ui.reused.transfer.sourcetarget.ShowSourceOrTargetForm.lambda$new$1(ShowSourceOrTargetForm.java:51)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
	at java.awt.Component.processMouseEvent(Component.java:6539)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
	at java.awt.Component.processEvent(Component.java:6304)
	at java.awt.Container.processEvent(Container.java:2239)
	at java.awt.Component.dispatchEventImpl(Component.java:4889)
	at java.awt.Container.dispatchEventImpl(Container.java:2297)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4904)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4535)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4476)
	at java.awt.Container.dispatchEventImpl(Container.java:2283)
	at java.awt.Window.dispatchEventImpl(Window.java:2746)
	at java.awt.Component.dispatchEvent(Component.java:4711)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:84)
	at java.awt.EventQueue$4.run(EventQueue.java:733)
	at java.awt.EventQueue$4.run(EventQueue.java:731)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:730)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at org.opendatakit.briefcase.ui.pull.PullPanel.lambda$new$8(PullPanel.java:100)
	at org.opendatakit.briefcase.ui.reused.transfer.TransferPanelForm.lambda$onCancel$3(TransferPanelForm.java:111)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)

Steps to reproduce the problem

1. Connect to a Central server
2. Click the reload button, see that the pull panel is frozen
3. Try to cancel, see that this has no effect

Expected behavior

Clicking the reload button should reload data from the Central server.

[lognaturel]

It's weirder than that. It's fine if you reload right after setting the server. It fails if the server was remembered between launches because reload is done by making the call triggerOnSelect(selectView.getSelectedOption().orElseThrow(BriefcaseException::new)); and when the server was previously set, the select view is not involved and Central is not selected.