fix crash

TODO.md

@@ -6,3 +6,18 @@
 - add datastream support:
   https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-get-data-stream
   
+- Fix: cluster status word wrapping adds one \n to much:
+
+```console
+Bad health shards_availability       This cluster has 1 unavailable replica shard.
+ -> cause                            Elasticsearch isn't allowed to allocate some shards from these indices to any of the nodes in the
+
+                                     cluster.
+    -> affected indices              foo-t-log-logs-002947
+        -> suggested action to fix   Diagnose the issue by calling the allocation explain API for an index [GET
+
+                                     _cluster/allocation/explain]. Choose a node to which you expect a shard to be allocated, find this
+
+                                     node in the node-by-node explanation, and address the reasons which prevent Elasticsearch from
+```
+

pkg/es/ilm.go

@@ -285,9 +285,11 @@ func IlmExplain(conf *cfg.Config, index string) error {
 
 	info := ""
 
-	err = json.Unmarshal(ilm.StepInfo["reason"], &info)
-	if err != nil {
-		return fmt.Errorf("failed to unmarshal step info: %w", err)
+	if len(ilm.StepInfo["reason"]) > 0 {
+		err = json.Unmarshal(ilm.StepInfo["reason"], &info)
+		if err != nil {
+			return fmt.Errorf("failed to unmarshal step info: %w", err)
+		}
 	}
 
 	table.Entries = [][]any{
@@ -299,8 +301,11 @@ func IlmExplain(conf *cfg.Config, index string) error {
 		{"phase", *ilm.Phase},
 		{"phase execution", ilmPhaseString(ilm.PhaseExecution.PhaseDefinition, false)},
 		{"step", *ilm.Step},
-		{"failed step", *ilm.FailedStep},
-		{"failed step retry count", ilm.FailedStepRetryCount},
+	}
+
+	if ilm.FailedStep != nil {
+		table.AddRow("failed step", *ilm.FailedStep)
+		table.AddRow("failed step retry count", ilm.FailedStepRetryCount)
 	}
 
 	if err := table.Print(); err != nil {