:recycle: better error messages for sessin token processing

backend/lib/routes/user/validate-session.js

             try {
                 const validatedSessionToken =
                     userService.validateSession(hashedSessionToken)
+                if(validatedSessionToken?.email) throw new Error(`Could not validate token based on request: ${request}`)
+                
                 const user = await userService.findByUserEmail(
                     validatedSessionToken.email,
                 )

backend/lib/services/user.js

      * @returns {PayloadFromActiveSessions}
      */
     validateSession(hashedSessionToken) {
+        if (!hashedSessionToken) {
+            throw new Error(
+                'hashedSessionToken not passed!',
+            )
+        }
         const userSession = this.activeSessions[hashedSessionToken]
         if (!userSession) {
             throw new Error(

frontend/src/views/VerifyView.vue

             sessionData = await authenticator.verifySession(hash)
             if (!sessionData.hashesMatch)
                 throw new Error('Hash is not in activeSessions!')
+            
+            /** Check if session was confirmed and is now valid in guard*/
+            this.$router.push('/')
         } catch (err) {
             console.error(err)
         }
-        /** Check if session was confirmed and is now valid in guard*/
-        this.$router.push('/')
     }
 }
 </script>