Fix OutOfMemoryError

✅ Solution

OutOfMemoryError in Elasticsearch often arises from excessive heap usage due to large aggregations or insufficient memory allocated to the JVM. Reduce Elasticsearch's heap usage by optimizing queries and aggregations (e.g., using sampling, increasing shard count), and increase JVM heap size (`-Xms` and `-Xmx` in `jvm.options`) based on available server resources after thorough monitoring.