This article discusses the following error returned while customizing the Okta Sign-in Widget i18n properties:

L10N_ERROR

• Sign-in Widget
• i18n properties
• login.properties

The L10N_ERROR is caused when an Okta Sign-in Widget i18n property that contains a variable (such as {0}, {1}) is overridden and that variable is not included in the modified text.

config.i18n.en['customauth.sign.in.with.label'] = "Override";

• In this example, the "customauth.sign.in.with.label" property has been overridden and does not contain the expected {0} variable, which represents the name of the external identity provider:

To avoid this error when overriding the text for any of the i18n properties that contain a variable, the modified text for the variable must still include that variable. 

config.i18n.en['customauth.sign.in.with.label'] = "Override {0}";

• In this example, the same property has been changed, but includes the {0} variable: