log what's wrong with the JWT when it doesn't get accepted.

Author: sscarduzio

core/src/main/scala/tech/beshu/ror/acl/blocks/rules/JwtAuthRule.scala

@@ -115,7 +115,7 @@ class JwtAuthRule(val settings: JwtAuthRule.Settings)
               .toEither
               .map(JwtTokenPayload.apply)
               .left.map { ex =>
-              logger.errorEx(s"JWT token '${token.show}' parsing error", ex)
+              logger.errorEx(s"JWT token '${token.show}' parsing error: " + ex.getClass.getSimpleName, ex)
               ()
             }
           case _ =>
@@ -126,7 +126,7 @@ class JwtAuthRule(val settings: JwtAuthRule.Settings)
           .toEither
           .map(JwtTokenPayload.apply)
           .left.map { ex =>
-          logger.errorEx(s"JWT token '${token.show}' parsing error", ex)
+          logger.errorEx(s"JWT token '${token.show}' parsing error: " + ex.getClass.getSimpleName, ex)
           ()
         }
     }

core/src/main/scala/tech/beshu/ror/acl/blocks/rules/RorKbnAuthRule.scala

@@ -99,7 +99,7 @@ class RorKbnAuthRule(val settings: Settings)
       .toEither
       .map(JwtTokenPayload.apply)
       .left.map { ex =>
-      logger.errorEx(s"JWT token '${token.show}' parsing error", ex)
+      logger.errorEx(s"JWT token '${token.show}' parsing error " + ex.getClass.getSimpleName, ex)
       ()
     }
   }