Add also negative value check

 		if ($owner) {

--- lib/private/Files/Storage/Wrapper/Quota.php	2024-02-28 23:45:03.136041704 +0530

+++ lib/private/Files/Storage/Wrapper/Quota-new.php	2024-02-28 23:49:24.518192286 +0530

@@ -117,7 +117,9 @@

@@ -117,7 +117,10 @@

 				return FileInfo::SPACE_NOT_COMPUTED;

 			} else {

 				$free = $this->storage->free_space($path);

-				$quotaFree = max($this->getQuota() - $used, 0);

+				$ownerId = $this->storage->getUser()->getUID();

+				$mailQuotaUsage = (int) \OC::$server->getConfig()->getUserValue($ownerId, 'ecloud-accounts', 'mailQuotaUsage', 0);

+				$mailQuotaUsage = max($mailQuotaUsage, 0); // to avoid negative mail quota usage value

+				$quotaFree = max($this->getQuota() - $used - $mailQuotaUsage, 0);

 				// if free space is known

 				$free = $free >= 0 ? min($free, $quotaFree) : $quotaFree;