Thank you for the reply, dobbel.
I tried ‘quasar build -m cordova -T ios’ and then open from .workspace file as you said.
Now it worked!!!You saved me a lot, I appreciate it. Thanks.

Hi, now I am trying to build cordova project on Xcode.
From terminal command ‘quasar dev -m cordova -T ios’ works well, but when I try to build on Xcode, cannnot build.

What I tried;
I know Apple will stop accepting builds containing references to UIWebView. I installed “cordova-plugin-wkwebview-engine” plugin and put codes on config.xml as mentioned below page.

https://cordova.apache.org/howto/2020/03/18/wkwebviewonly.html

but still get some error message on Xcode.

How can I fix this issue.

my config.xml

<platform name="ios">
        <allow-intent href="itms:*" />
        <allow-intent href="itms-apps:*" />
        <preference name="OverrideUserAgent" value="Mozilla/5.0 (iPhone; CPU iPhone OS 13_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0 Mobile/15E148 Safari/604.1" />
        <allow-navigation href="http://*" />
        <allow-navigation href="https://*" />
        <feature name="CDVWKWebViewEngine">
            <param name="ios-package" value="CDVWKWebViewEngine" />
        </feature>
        <preference name="CordovaWebViewEngine" value="CDVWKWebViewEngine" />
        <preference name="WKWebViewOnly" value="true" />
    </platform>

package.json

"cordova": {
    "plugins": {
      "cordova-plugin-whitelist": {},
      "cordova-plugin-wkwebview-engine": {},
      "cordova-plugin-browsertab": {},
      "cordova-plugin-buildinfo": {},
      "cordova-plugin-compat": {},
      "cordova-plugin-device": {},
      "cordova-plugin-file": {},
      "cordova-plugin-media": {
        "KEEP_AVAUDIOSESSION_ALWAYS_ACTIVE": "NO"
      },
      "cordova-plugin-splashscreen": {},
      "cordova-universal-links-plugin": {},
      "cordova-plugin-inappbrowser": {}
    },
    "platforms": [
      "ios"
    ]
  }

Please give me some hints!!