diff --git a/src/Tracy/BlueScreen/BlueScreen.php b/src/Tracy/BlueScreen/BlueScreen.php
index f2ff25a4c..acc1d6bc0 100644
--- a/src/Tracy/BlueScreen/BlueScreen.php
+++ b/src/Tracy/BlueScreen/BlueScreen.php
@@ -261,7 +261,7 @@ private function renderActions(\Throwable $ex): array
 			$class = $m[2];
 			if (
 				!class_exists($class, false) && !interface_exists($class, false) && !trait_exists($class, false)
-				&& ($file = Helpers::guessClassFile($class)) && !is_file($file)
+				&& ($file = Helpers::guessClassFile($class)) && !@is_file($file) // @ - may trigger error
 			) {
 				[$content, $line] = $this->generateNewFileContents($file, $class);
 				$actions[] = [
@@ -273,7 +273,7 @@ private function renderActions(\Throwable $ex): array
 
 		if (preg_match('# ([\'"])((?:/|[a-z]:[/\\\\])\w[^\'"]+\.\w{2,5})\1#i', $ex->getMessage(), $m)) {
 			$file = $m[2];
-			if (is_file($file)) {
+			if (@is_file($file)) { // @ - may trigger error
 				$label = 'open';
 				$content = '';
 				$line = 1;
diff --git a/src/Tracy/BlueScreen/assets/section-lastMutedError.phtml b/src/Tracy/BlueScreen/assets/section-lastMutedError.phtml
index 7e5565f4a..a4f79f73c 100644
--- a/src/Tracy/BlueScreen/assets/section-lastMutedError.phtml
+++ b/src/Tracy/BlueScreen/assets/section-lastMutedError.phtml
@@ -19,7 +19,7 @@ if (!$lastError) {
 	<h3><?= Helpers::errorTypeToString($lastError['type']) ?>: <?= Helpers::escapeHtml($lastError['message']) ?></h3>
 	<p><i>Note: the last muted error may have nothing to do with the thrown exception.</i></p>
 
-<?php if (isset($lastError['file']) && is_file($lastError['file'])): ?>
+<?php if (isset($lastError['file']) && @is_file($lastError['file'])): // @ - may trigger error ?>
 	<p><?= Helpers::editorLink($lastError['file'], $lastError['line']) ?></p>
 	<div><?= BlueScreen::highlightFile($lastError['file'], $lastError['line']) ?></div>
 <?php else: ?>
diff --git a/src/Tracy/BlueScreen/assets/section-stack-callStack.phtml b/src/Tracy/BlueScreen/assets/section-stack-callStack.phtml
index fa94d4e51..c298edd19 100644
--- a/src/Tracy/BlueScreen/assets/section-stack-callStack.phtml
+++ b/src/Tracy/BlueScreen/assets/section-stack-callStack.phtml
@@ -21,10 +21,10 @@ if (!$stack) {
 	<div class="tracy-section-panel">
 	<div class="tracy-callstack">
 <?php foreach ($stack as $key => $row): ?>
-<?php	$clickable = !empty($row['args']) || (isset($row['file']) && is_file($row['file'])) ?>
+<?php	$clickable = !empty($row['args']) || (isset($row['file']) && @is_file($row['file'])) // @ - may trigger error ?>
 
 		<div class="tracy-callstack-file">
-<?php	if (isset($row['file']) && is_file($row['file'])): ?>
+<?php	if (isset($row['file']) && @is_file($row['file'])): // @ - may trigger error ?>
 			<?= Helpers::editorLink($row['file'], $row['line']) ?>
 <?php	else: ?>
 			<i>inner-code</i><?php if (isset($row['line'])) echo ':', $row['line'] ?>
@@ -42,7 +42,7 @@ if (!$stack) {
 
 <?php	if ($clickable): ?>
 		<div class="tracy-callstack-additional<?php if ($expanded !== $key) echo ' tracy-collapsed' ?>">
-<?php $sourceOriginal = isset($row['file']) && is_file($row['file']) ? [$row['file'], $row['line']] : null ?>
+<?php $sourceOriginal = isset($row['file']) && @is_file($row['file']) ? [$row['file'], $row['line']] : null // @ - may trigger error ?>
 <?php $sourceMapped = $sourceOriginal ? Debugger::mapSource(...$sourceOriginal) : null ?>
 <?php if ($sourceOriginal && $sourceMapped): ?>
 			<div class="tracy-tabs">
diff --git a/src/Tracy/BlueScreen/assets/section-stack-sourceFile.phtml b/src/Tracy/BlueScreen/assets/section-stack-sourceFile.phtml
index a678c2eab..a3d72e230 100644
--- a/src/Tracy/BlueScreen/assets/section-stack-sourceFile.phtml
+++ b/src/Tracy/BlueScreen/assets/section-stack-sourceFile.phtml
@@ -10,7 +10,7 @@ namespace Tracy;
  * @var int $expanded
  */
 
-$sourceOriginal = $file && is_file($file) ? [$file, $line] : null;
+$sourceOriginal = $file && @is_file($file) ? [$file, $line] : null; // @ - may trigger error
 $sourceMapped = $sourceOriginal ? Debugger::mapSource($file, $line) : null;
 ?>
 
diff --git a/src/Tracy/Dumper/Describer.php b/src/Tracy/Dumper/Describer.php
index d974bfec2..fb32ae75c 100644
--- a/src/Tracy/Dumper/Describer.php
+++ b/src/Tracy/Dumper/Describer.php
@@ -381,7 +381,7 @@ private static function findLocation(): ?array
 			break;
 		}
 
-		if (isset($location['file'], $location['line']) && is_file($location['file'])) {
+		if (isset($location['file'], $location['line']) && @is_file($location['file'])) { // @ - may trigger error
 			$lines = file($location['file']);
 			$line = $lines[$location['line'] - 1];
 			return [
diff --git a/src/Tracy/Helpers.php b/src/Tracy/Helpers.php
index 46fa9d6d2..a0f179fba 100644
--- a/src/Tracy/Helpers.php
+++ b/src/Tracy/Helpers.php
@@ -58,7 +58,7 @@ public static function editorUri(
 		string $replace = ''
 	): ?string
 	{
-		if (Debugger::$editor && $file && ($action === 'create' || is_file($file))) {
+		if (Debugger::$editor && $file && ($action === 'create' || @is_file($file))) { // @ - may trigger error
 			$file = strtr($file, '/', DIRECTORY_SEPARATOR);
 			$file = strtr($file, Debugger::$editorMapping);
 			$search = str_replace("\n", PHP_EOL, $search);