fix: try removing jsx usage

backend/src/services/smtp/smtp-service.ts

@@ -130,7 +130,11 @@ export const smtpServiceFactory = (cfg: TSmtpConfig) => {
     }
 
     const htmlToSend = await render(
-      <EmailTemplate {...substitutions} isCloud={appCfg.isCloud} siteUrl={appCfg.SITE_URL} />
+      React.createElement(EmailTemplate, {
+        ...substitutions,
+        isCloud: appCfg.isCloud,
+        siteUrl: appCfg.SITE_URL
+      })
     );
 
     if (isSmtpOn) {

backend/tsconfig.json

@@ -26,7 +26,7 @@
     "paths": {
       "@app/*": ["./src/*"]
     },
-    "jsx": "react"
+    "jsx": "react-jsx"
   },
   "include": ["src/**/*", "scripts/**/*", "e2e-test/**/*", "./.eslintrc.js", "./tsup.config.js"],
   "exclude": ["node_modules"]