airbnb/lottie-android · error · IllegalArgumentException

Cannot convert json to point. Next token is

Error message

Cannot convert json to point. Next token is {}

What it means

PointFParser.parse() reads a PointF from the JSON stream, handling BEGIN_ARRAY, BEGIN_OBJECT, and NUMBER tokens. If the next token is none of these (e.g., STRING, BOOLEAN, NULL), it throws IllegalArgumentException. This is the higher-level entry point that delegates to JsonUtils.jsonToPoint() for array/object cases and handles bare-number pairs inline.

Solutions

1. Validate the animation JSON with LottieFiles validator.
2. Use the exception's path information to locate the malformed PointF field and fix its structure to [x, y], {"x":..,"y":..}, or bare x y.
3. Re-export the animation from its source (After Effects / LottieFiles).

LottieTask<LottieComposition> task = LottieCompositionFactory.fromAsset(context, name);
task.addListener(result -> { /* success */ })
     .addFailureListener(e -> { /* malformed JSON */ });

When it happens

Trigger: A position/anchor/vertex field in the Lottie JSON begins with an unexpected token that is not an array, object, or number. Functionally the same class of error as errors [23] and [24] but reached through the PointFParser dispatch path.

Common situations: Corrupted Lottie JSON; non-standard export tool producing unexpected token types for coordinate fields; truncation causing the reader to land on a wrong token.

Related errors

• Unknown point starts with
• Unknown value for token of type
• at path
• Expected a value but was
• Shape data was missing information.

AI-assisted analysis of airbnb/lottie-android@05ea92e903 (2026-08-14). Data as JSON: /api/errors/82ad8ff20176a4b3. Report an issue: GitHub.

Appendix: source

Thrown at lottie/src/main/java/com/airbnb/lottie/parser/PointFParser.java:32

  @Override
  public PointF parse(JsonReader reader, float scale) throws IOException {
    JsonReader.Token token = reader.peek();
    if (token == JsonReader.Token.BEGIN_ARRAY) {
      return JsonUtils.jsonToPoint(reader, scale);
    } else if (token == JsonReader.Token.BEGIN_OBJECT) {
      return JsonUtils.jsonToPoint(reader, scale);
    } else if (token == JsonReader.Token.NUMBER) {
      // This is the case where the static value for a property is an array of numbers.
      // We begin the array to see if we have an array of keyframes but it's just an array
      // of static numbers instead.
      PointF point = new PointF((float) reader.nextDouble() * scale, (float) reader.nextDouble() * scale);
      while (reader.hasNext()) {
        reader.skipValue();
      }
      return point;
    } else {
      throw new IllegalArgumentException("Cannot convert json to point. Next token is " + token);
    }
  }
}

View on GitHub (pinned to 05ea92e903)