quarkusio/quarkus · error

Object param not present

Error message

Object param not present

What it means

The {with} section requires an object parameter: {#with object}...{/}. WithSectionHelper.initializeBlock() throws IllegalStateException when the parameter named 'object' is absent from the section's parameters, because there is nothing to bind the nested scope to.

Solutions

1. Add the object expression to the section: {#with myObject}...{/}.
2. Verify the #with tag is not empty (no stray whitespace-only parameter removed by a minifier/template formatter).
3. If the value may be absent, wrap in a null check: {#if obj}{#with obj}...{/}{/}.
4. Re-run the app after fixing; the error occurs at block initialization so the template must be reparsed.

Example fix

// before
{#with}
  {name}
{/}
// after
{#with user.profile}
  {name}
{/}

// verify the with section always carries a parameter
if (templateBody.matches("(?s).*\\{#with\\s*\\}.*")) {
    throw new TemplateValidationException("{#with} requires an object parameter");
}

try {
    engine.parse(templateContent);
} catch (IllegalStateException e) {
    if ("Object param not present".equals(e.getMessage())) {
        // report template authoring error: {#with} missing parameter
    }
}

When it happens

Trigger: Writing {#with} (or {#with nested.foo}) with no parameter, e.g. {#with}{/}; an empty expression after #with; a template parsing quirk that drops the parameter.

Common situations: Hand-edited templates where the parameter was accidentally deleted; copy-pasting a {with} block and forgetting to fill in the object expression; generated templates with an empty variable placeholder.

Related errors

• Expression is not a literal:
• Cannot coerce to a BigDecimal
• Engine not set
• Engine not set
• Expression not found for param []:

AI-assisted analysis of quarkusio/quarkus@e1c734241f (2026-09-05). Data as JSON: /api/errors/cc7e05d9bff818c9. Report an issue: GitHub.

Appendix: source

Thrown at independent-projects/qute/core/src/main/java/io/quarkus/qute/WithSectionHelper.java:54

            return ImmutableList.of(WITH);
        }

        @Override
        public ParametersInfo getParameters() {
            return ParametersInfo.builder().addParameter(OBJECT).build();
        }

        @Override
        public WithSectionHelper initialize(SectionInitContext context) {
            return new WithSectionHelper(context);
        }

        @Override
        public Scope initializeBlock(Scope previousScope, BlockInfo block) {
            if (block.getLabel().equals(MAIN_BLOCK_NAME)) {
                String object = block.getParameters().get(OBJECT);
                if (object == null) {
                    throw new IllegalStateException("Object param not present");
                }
                block.addExpression(OBJECT, object);
                return previousScope;
            } else {
                return previousScope;
            }
        }

    }
}

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