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Cannot invoke "java.awt.image.BufferedImage.getWidth()" because "img" is null

at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972) at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed ...
GitHub

java.lang.NullPointerException: Cannot invoke "java.net.URL.toExternalForm()" because "location" is null

at com.github.yougitlabprojects.configuration.SettingsView.lambda$setup$0(SettingsView.java:35) at java.desktop/javax.swing.AbstractButton.fireActionPerformed ...