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-rw-r--r--app/Statistics/Google/ChartFamilyWithSources.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/app/Statistics/Google/ChartFamilyWithSources.php b/app/Statistics/Google/ChartFamilyWithSources.php
index 9caffb9144..09683e5cd4 100644
--- a/app/Statistics/Google/ChartFamilyWithSources.php
+++ b/app/Statistics/Google/ChartFamilyWithSources.php
@@ -53,7 +53,7 @@ class ChartFamilyWithSources
public function chartFamsWithSources(
int $tot_fam,
int $tot_fam_source,
- string $color_from = null,
+ string|null $color_from = null,
string $color_to = null
): string {
$color_from ??= 'ffffff';