impossible to save file, like .env in symfony project

hello, 

i can't save my file .env, because i have this image:

so  could you help me ?

i'm with this version of phpStorm :

PhpStorm 2025.2
Build #PS-252.23892.419, built on August 1, 2025
Source revision: 42cc6c7831493
Licensed to Alexandre Marillesse
Subscription is active until August 27, 2025.
Runtime version: 21.0.7+6-b1038.58 amd64 (JCEF 122.1.9)
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Toolkit: sun.awt.X11.XToolkit
Linux 6.8.1-1026-realtime
Ubuntu 24.04.3 LTS; glibc: 2.39
GC: G1 Young Generation, G1 Concurrent GC, G1 Old Generation
Memory: 854M
Cores: 8
Registry:
 run.processes.with.pty=TRUE
 ide.experimental.ui=true
Non-Bundled Plugins:
 JavaScriptDebugger (252.23892.464)
 org.jetbrains.plugins.yaml (252.23892.464)
 org.jetbrains.completion.full.line (252.23892.458)
 com.intellij.copyright (252.23892.464)
 org.jetbrains.security.package-checker (252.23892.464)
 hunspell (252.23892.464)
 com.intellij.ideolog (252.23892.449)
 org.editorconfig.editorconfigjetbrains (252.23892.464)
 Subversion (252.23892.464)
 org.jetbrains.plugins.github (252.23892.464-IU)
 org.jetbrains.plugins.gitlab (252.23892.464-IU)
 com.jetbrains.restClient (252.23892.464)
 com.intellij.swagger (252.23892.464)
 com.intellij.react (252.23892.515)
 com.intellij.php.tools.quality.phpstan (252.23892.458)
 com.jetbrains.php.phpspec (252.23892.458)
 com.intellij.php.psalm (252.23892.458)
 com.jetbrains.php.codeception (252.23892.458)
 com.pestphp.pest-intellij (252.23892.458)
 com.jetbrains.php.blade (252.23892.458)
 com.jetbrains.twig (252.23892.449)
 com.jetbrains.php.wordPress (252.23892.458)
 com.jetbrains.php.drupal (252.23892.458)
 Karma (252.25204.0)
 org.jetbrains.plugins.vue (252.23892.449)
Current Desktop: ubuntu:GNOME