fix a bunch of crash

SessionMessagingKit/Configuration.swift

@@ -61,5 +61,6 @@ public enum SNMessagingKit { // Just to make the external API nice
         JobRunner.add(executor: ConfigurationSyncJob.self, for: .configurationSync)
         JobRunner.add(executor: ConfigMessageReceiveJob.self, for: .configMessageReceive)
         JobRunner.add(executor: ExpirationUpdateJob.self, for: .expirationUpdate)
+        JobRunner.add(executor: GetExpirationJob.self, for: .getExpiration)
     }
 }

SessionMessagingKit/Jobs/Types/GetExpirationJob.swift

@@ -29,6 +29,10 @@ public enum GetExpirationJob: JobExecutor {
         }
         
         var expirationInfo: [String: TimeInterval] = details.expirationInfo
+        guard expirationInfo.count > 0 else {
+            success(job, false)
+            return
+        }
         
         let userPublicKey: String = getUserHexEncodedPublicKey()
         SnodeAPI.getSwarm(for: userPublicKey)
@@ -82,11 +86,9 @@ public enum GetExpirationJob: JobExecutor {
                         }
                         
                         if !expirationInfo.isEmpty {
-                            let updatedJob: Job? = Storage.shared.write { db in
-                                try job
-                                    .with(nextRunTimestamp: Date().timeIntervalSince1970 + minRunFrequency)
-                                    .saved(db)
-                            }
+                            let updatedJob: Job? = try job
+                                .with(nextRunTimestamp: Date().timeIntervalSince1970 + minRunFrequency)
+                                .saved(db)
                             
                             deferred(updatedJob ?? job)
                         }

SessionUtilitiesKit/JobRunner/JobRunner.swift

@@ -72,7 +72,8 @@ public final class JobRunner {
             executionType: .concurrent, // Allow as many jobs to run at once as supported by the device
             qos: .default,
             jobVariants: [
-                jobVariants.remove(.expirationUpdate)
+                jobVariants.remove(.expirationUpdate),
+                jobVariants.remove(.getExpiration)
             ].compactMap { $0 }
         )
         let messageSendQueue: JobQueue = JobQueue(