It seems the KNIME javadoc is no longer available anywhere.
As per other posts in this forum (Where are JavaDoc for knime, can't find them lately., Online javadoc link broken, JavaDoc API resource is down?) I have tried the different resources mentioned. The only one which was working lately was https://docs.huihoo.com/javadoc/knime/, but since today we have a 403.
Do you have any info about that?