check if file exist

apps/remix-ide/src/app/editor/editor.js

@@ -185,10 +185,12 @@ class Editor extends Plugin {
           if (path.startsWith('./') || path.startsWith('../')) path = resolve(fromPath, path)
           if (path.startsWith('/')) path = path.substring(1)
           if (!path.endsWith('.ts')) path = path + '.ts'
+          if (await this.call('fileManager', 'exists', path)) {
             content = await this.call('fileManager', 'readFile', path)
             this.emit('addModel', content, 'typescript', path, false)
           }
         }
+      }
     })
     try {
       this.currentThemeType = (await this.call('theme', 'currentTheme')).quality