Anuken/Mindustry · error · IllegalArgumentException

No ${type} found with name '${name}'

Error message

No ${type} found with name '${name}'

What it means

find(ContentType, name) looks up content by exact name, then by currentMod-prefixed name (currentMod.name + "-" + name). If both fail, no content exists with that reference, so a downstream operation would NPE — the parser fails fast with a descriptive message instead.

Source

Thrown at core/src/mindustry/mod/ContentParser.java:918

        };
    }

    private String getString(JsonValue value, String key){
        if(value.has(key)){
            return value.getString(key);
        }else{
            throw new IllegalArgumentException("You are missing a \"" + key + "\". It must be added before the file can be parsed.");
        }
    }

    private String getType(JsonValue value){
        return getString(value, "type");
    }

    private <T extends Content> T find(ContentType type, String name){
        Content c = Vars.content.getByName(type, name);
        if(c == null && currentMod != null) c = Vars.content.getByName(type, currentMod.name + "-" + name);
        if(c == null) throw new IllegalArgumentException("No " + type + " found with name '" + name + "'");
        return (T)c;
    }

    private <T extends Content> TypeParser<T> parser(ContentType type, Func<String, T> constructor){
        return (mod, name, value) -> {
            T item;
            if(allowPatching && locate(type, name) != null){
                item = (T)locate(type, name);
                readBundle(type, name, value);
            }else{
                readBundle(type, name, value);
                item = constructor.get(mod + "-" + name);
            }
            currentContent = item;
            read(() -> readFields(item, value));
            return item;
        };
    }

View on GitHub (pinned to f695ad7e60)

Solutions

1. Use the exact internal content name (e.g. "copper", not "Copper").
2. Ensure the referenced content is loaded before the referencing file.
3. Verify the content type matches (do not look up a liquid via ContentType.item).

Example fix

// before
find(ContentType.item, "Copper")
// after
find(ContentType.item, "copper")

// Verify content exists before referencing it.
Content c = Vars.content.getByName(type, name);
if(c == null && currentMod != null) c = Vars.content.getByName(type, currentMod.name + "-" + name);
if(c == null) throw new IllegalStateException("No " + type + " named '" + name + "' is registered");

When it happens

Trigger: Any JSON reference (consume item, requirement block, etc.) names content that is not registered: typo, wrong content type, or not-yet-loaded content.

Common situations: Referring to a vanilla item by display name instead of internal name; depending on content from a mod that loads later; using the wrong ContentType.

Related errors

• Planet '${value.getString("planet")}' not found.
• "${jsonData.name}": No content found with name '${jsonData.a
• ${jsonData.name == null ? "" : "\"" + jsonData.name + "\": "
• Unknown consumption type: '${child.name}' for block '${block
• Blocks cannot be larger than ${maxBlockSize}

AI-assisted analysis of Anuken/Mindustry@f695ad7e60 (2026-08-14). Data as JSON: /api/errors/38a7ef36bc244a97. Report an issue: GitHub.