fix panic in gui, bump to v1.10.6

docs/release-notes/change-log.md

@@ -9,6 +9,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## v1.10.6
+
+* Fixed `substreams gui` panic (regression appeared in v1.10.3)
+
 ## v1.10.5
 
 * Fixed an(other) issue where multiple stores running on the same stage with different initialBlocks will fail to proress (and hang)

tui2/components/blockselect/blockselect.go

@@ -117,7 +117,10 @@ func (b *BlockSelect) View() string {
 	}
 
 	var activeBlock string
-	ptr := int(float64(b.activeBlock-b.lowBlock) / binSize)
+	var ptr int
+	if b.activeBlock > 0 { // avoid division by zero
+		ptr = int(float64(b.activeBlock-b.lowBlock) / binSize)
+	}
 	activeBlock = fmt.Sprintf("%s: %s",
 		styles.BlockSelect.CurrentBlock.Render("Current block"),
 		styles.BlockSelect.SelectedBlock.Render(humanize.Comma(int64(b.activeBlock))),
@@ -134,6 +137,7 @@ func (b *BlockSelect) View() string {
 		if repeatLen < 0 {
 			repeatLen = 0
 		}
+
 		activeBlock = fmt.Sprintf("%s%s ^",
 			strings.Repeat(" ", repeatLen),
 			activeBlock,