java.lang.SecurityException: class "javax.servlet.ServletRegistration"'s signer information does not match signer information of other classes in the same package

Error message:

Screenshot error:

solution:

Because it is sbt project, so add it after dependent solve:

If maven project, then add dependencies to the pom file and then re-build, then it

 

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Origin www.cnblogs.com/Gxiaobai/p/11415900.html