.
./pom.xml
./src
./src/main
./src/main/resources
./src/main/resources/templates
./src/main/resources/templates/otp.ftl
./src/main/resources/templates/phone.ftl
./src/main/resources/META-INF
./src/main/resources/META-INF/services
./src/main/resources/META-INF/services/org.keycloak.authentication.AuthenticatorFactory
./src/main/java
./src/main/java/phone_otp
./src/main/java/phone_otp/AuthFactory.java
./src/main/java/phone_otp/Auth.java

    @Override
    public void authenticate(AuthenticationFlowContext context) {
        String phone = (String) context.getSession().getAttribute("phone");
        String errorMessage = (String) context.getSession().getAttribute("phoneError");

        LoginFormsProvider form = context.form();
        form.setAttribute("phone", phone);
        form.setAttribute("errorMessage", errorMessage);

        Response challengeResponse = form.createForm("phone.ftl");
        context.challenge(challengeResponse);
    }

2025-10-11 14:09:11,288 DEBUG [org.keycloak.authentication.DefaultAuthenticationFlow] (executor-thread-5) invoke authenticator.authenticate: phone-otp-authenticator
2025-10-11 14:09:11,303 FINE  [freemarker.cache] (executor-thread-5) Couldn't find template in cache for "phone.ftl"("en_US", UTF-8, parsed); will try to load it.
2025-10-11 14:09:11,303 FINE  [freemarker.cache] (executor-thread-5) TemplateLoader.findTemplateSource("phone_en_US.ftl"): Not found
2025-10-11 14:09:11,303 FINE  [freemarker.cache] (executor-thread-5) TemplateLoader.findTemplateSource("phone_en.ftl"): Not found
2025-10-11 14:09:11,304 FINE  [freemarker.cache] (executor-thread-5) TemplateLoader.findTemplateSource("phone.ftl"): Not found
2025-10-11 14:09:11,304 ERROR [org.keycloak.forms.login.freemarker.FreeMarkerLoginFormsProvider] (executor-thread-5) Failed to process template: org.keycloak.theme.FreeMarkerException: Failed to process template phone.ftl
	at org.keycloak.theme.freemarker.DefaultFreeMarkerProvider.processTemplate(DefaultFreeMarkerProvider.java:52)
	at org.keycloak.forms.login.freemarker.FreeMarkerLoginFormsProvider.processTemplate(FreeMarkerLoginFormsProvider.java:611)