ran dart analyze and fixed issues

bin/nostr_console.dart

@@ -90,6 +90,7 @@ Future<void> main(List<String> arguments) async {
         gNumLeftMarginSpaces = (stdout.terminalColumns - gTextWidth )~/2;
       } on StdoutException catch (e) {
         print("Cannot find terminal size. Left aligning by default.");
+        if( gDebug > 0) log.info("${e.message}");
         gNumLeftMarginSpaces = 0;
       }
       // undo above if left option is given

lib/console_ui.dart

@@ -190,7 +190,6 @@ Future<void> otherMenuUi(Tree node, var contactList) async {
 
               // if contact list was found, get user's feed, and keep the contact list for later use 
               String authorName = gKindONames[pubkey.first]?.name??"";
-              List<String> contactList = [];
               printUnderlined("\nProfile for User");
               print("\nName   : $authorName ( ${pubkey.first} ).");
 
@@ -324,10 +323,12 @@ Future<void> otherMenuUi(Tree node, var contactList) async {
           gNumLastDays =  int.parse(newNumDays);
           print("Changed number of days printed to $gNumLastDays");
         } on FormatException catch (e) {
-          print("Invalid input. Kindly try again.");
+          print("Invalid input. Kindly try again."); 
+          if( gDebug > 0) print(" ${e.message}"); 
           continue;
         } on Exception catch (e) {
-          print("Invalid input. Kindly try again.");
+          print("Invalid input. Kindly try again."); 
+          if( gDebug > 0) print(" ${e}"); 
           continue;
         }    
 
@@ -453,6 +454,8 @@ Future<void> mainMenuUi(Tree node, var contactList) async {
           }          
           gNumLeftMarginSpaces = (stdout.terminalColumns - gTextWidth )~/2;
         } on StdoutException catch (e) {
+          print("Terminal information not available");
+          if( gDebug>0)  print("${e.message}");
           gNumLeftMarginSpaces = 0;
         }
       }

lib/event_ds.dart

@@ -313,7 +313,7 @@ class EventData {
           try {
           translator
               .translate(content, to: 'en')
-              .catchError( (error, stackTrace) =>   null )
+              //.catchError( (error, stackTrace) =>   null )
               .then( (result) => { evaluatedContent =   "$evaluatedContent\n\nTranslation: ${result.toString()}" , if( gDebug > 0)  print("Google translate returned successfully for one call.")} 
                      );
           } on Exception catch(err) {
@@ -344,9 +344,7 @@ class EventData {
     int n = 4;
     String maxN(String v)       => v.length > n? v.substring(0,n) : v.substring(0, v.length);
     void   printInColor(String s, String commentColor) => stdout.supportsAnsiEscapes ?stdout.write("$commentColor$s$colorEndMarker"):stdout.write(s);
-    
+        
-    DateTime dTime = DateTime.fromMillisecondsSinceEpoch(createdAt *1000);
-    
    // TODO do it in one call
    final df1 = DateFormat('hh:mm a');
    final df2 = DateFormat(DateFormat.YEAR_ABBR_MONTH_DAY);
@@ -449,6 +447,9 @@ class Event {
       }
       return Event(json[0] as String, json[1] as String,  EventData.fromJson(json[2]), [relay], d );
     } on Exception catch(e) {
+      if( gDebug> 0) {
+        print("Could not create event. returning dummy event. $e");
+      }
       return Event("","",EventData("non","", 0, 0, "", [], [], [], [[]], {}), [relay], "[json]");
     }
   }
@@ -539,8 +540,9 @@ Set<Event> readEventsFromFile(String filename) {
           Event e = Event.fromJson(lines[i], "");
           events.add(e);
     }
-  } on Exception catch(err) {
+  } on Exception catch(e) {
     print("cannot open file $gEventsFilename");
+    print("Could not open file. error =  $e");
   }
 
   return events;

lib/tree_ds.dart

@@ -90,7 +90,6 @@ class Tree {
               rooms[chatRoomId]?.name = json['name'];
             }
           } else {
-            List<String> temp = [];
             String roomName = "", roomAbout = "";
             if(  json.containsKey('name') ) {
               roomName = json['name'];
@@ -104,7 +103,7 @@ class Tree {
             //if( gDebug > 0) print("Added new chat room $chatRoomId with name ${json['name']} .");
           }
         } on Exception catch(e) {
-          if( gDebug > 0) print("In From Event. Event type 40. Json Decode error for event id ${value.e.eventData.id}");
+          if( gDebug > 0) print("In From Event. Event type 40. Json Decode error for event id ${value.e.eventData.id}. error = $e");
         }
       }
 
@@ -364,7 +363,7 @@ class Tree {
     int numPrinted = 0;
 
     // for the top most tree, create a smaller list which only has recent trees
-    List<Tree> latestTrees = []; // TODO
+    //List<Tree> latestTrees = []; // TODO
 
     if( whetherTopMost) {
       depth = depth - 1;
@@ -555,8 +554,9 @@ class Tree {
       }
 
       print("\n\nWrote total $eventCounter events to file \"$gEventsFilename\" of which ${countPosts + 1} are posts.")  ; // TODO remove extra 1
-    } on Exception catch (err) {
+    } on Exception catch (e) {
       print("Could not open file $filename.");
+      if( gDebug > 0) print("Could not open file: $e");
     }      
     
     return;
@@ -899,7 +899,6 @@ class Tree {
   void printSocialDistance(String otherPubkey, String otherName) {
     String otherName = getAuthorName(otherPubkey);
 
-    List<String> contactList = [];
     Event? contactEvent = this.getContactEvent(userPublicKey);
     bool isFollow = false;
     int  numSecond = 0; // number of your follows who follow the other