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Tag: google-app-engine

GAE JSF form tag error?

I make JSF project on GAP and it work well but when I put tag this problem appear HTTP ERROR 500 Problem accessing /welcome.jsf. Reason: DisableIdUniquenessCheck Caused by: Answer java.lang.NoSuchFieldError: DisableIdUniquenessCheck at com.sun.faces.util.Util.checkIdUniqueness(Util.java:812) This field was introduced in Mojarra 2.1.9 (evidence: it’s absent in Mojarra 2.1.8). This thus suggests that you’ve 2 Mojarra versions in your runtime classpath. One is