Avoids calling out errors in LogCat when they don't exist.

app/src/main/java/com/vitorpamplona/amethyst/model/LocalCache.kt

@@ -113,6 +113,8 @@ object LocalCache {
     }
 
     private fun isValidHexNpub(key: String): Boolean {
+        if (key.contains(":")) return false
+
         return try {
             Hex.decode(key).toNpub()
             true

app/src/main/java/com/vitorpamplona/amethyst/service/nip19/Nip19.kt

@@ -67,7 +67,7 @@ object Nip19 {
             }
             parsed?.copy(additionalChars = additionalChars ?: "")
         } catch (e: Throwable) {
-            Log.e("NIP19 Parser", "Issue trying to Decode NIP19 $key: ${e.message}", e)
+            Log.w("NIP19 Parser", "Issue trying to Decode NIP19 $key: ${e.message}", e)
             null
         }
     }