Log the error by default, instead check suppression config

api/src/main/java/com/viaversion/viaversion/api/debug/DebugHandler.java

@@ -23,9 +23,11 @@
 package com.viaversion.viaversion.api.debug;
 
 import com.google.common.annotations.Beta;
+import com.viaversion.viaversion.api.Via;
 import com.viaversion.viaversion.api.protocol.packet.Direction;
 import com.viaversion.viaversion.api.protocol.packet.PacketType;
 import com.viaversion.viaversion.api.protocol.packet.PacketWrapper;
+import java.util.logging.Level;
 
 @Beta
 public interface DebugHandler {
@@ -102,4 +104,16 @@ public interface DebugHandler {
             addPacketTypeToLog(packetType);
         }
     }
+
+    /**
+     * Logs an error if debug mode is enabled or error suppression is disabled.
+     *
+     * @param error error message
+     * @param t     thrown exception
+     */
+    default void error(final String error, final Throwable t) {
+        if (!Via.getConfig().isSuppressConversionWarnings() || enabled()) {
+            Via.getPlatform().getLogger().log(Level.SEVERE, error, t);
+        }
+    }
 }

common/src/main/java/com/viaversion/viaversion/protocols/protocol1_20_3to1_20_2/rewriter/BlockItemPacketRewriter1_20_3.java

@@ -165,9 +165,7 @@ public final class BlockItemPacketRewriter1_20_3 extends ItemRewriter<Clientboun
                 final JsonElement updatedComponent = ComponentUtil.convertJson(stringTag.getValue(), ComponentUtil.SerializerVersion.V1_19_4, ComponentUtil.SerializerVersion.V1_20_3);
                 stringTag.setValue(updatedComponent.toString());
             } catch (final Exception e) {
-                if (Via.getManager().isDebug()) {
-                    e.printStackTrace();
-                }
+                Via.getManager().debugHandler().error("Error during book conversion", e);
             }
         }
     }