https://github.com/fcitx/fcitx5-cskk/commit/da7e2ce7d8f1319368adae3d9e96513058c40018

--- a/src/cskk.cpp
+++ b/src/cskk.cpp
@@ -17,6 +17,13 @@
 #include <cstring>
 #include <fcitx-config/iniparser.h>
 #include <fcitx/addonmanager.h>
+#if __has_include(<fcitx-utils/standardpaths.h>)
+#include <fcitx-utils/standardpaths.h>
+#define FCITX_CSKK_HAS_STANDARDPATHS 1
+#else
+#include <fcitx-utils/standardpath.h>
+#define FCITX_CSKK_HAS_STANDARDPATHS 0
+#endif
 #include <fcitx/inputpanel.h>
 #include <filesystem>
 #include <string>
@@ -105,13 +112,23 @@ typedef enum _FcitxSkkDictType { FSDT_Invalid, FSDT_File } FcitxSkkDictType;
 void FcitxCskkEngine::loadDictionary() {
   freeDictionaries();
 
+#if FCITX_CSKK_HAS_STANDARDPATHS
+  auto dict_config_file = StandardPaths::global().open(
+      StandardPathsType::PkgData, "cskk/dictionary_list");
+#else
   auto dict_config_file = StandardPath::global().open(
       StandardPath::Type::PkgData, "cskk/dictionary_list", O_RDONLY);
+#endif
+
+  if (!dict_config_file.isValid()) {
+    return;
+  }
 
   UniqueFilePtr fp(fdopen(dict_config_file.fd(), "rb"));
   if (!fp) {
     return;
   }
+  dict_config_file.release();
 
   UniqueCPtr<char> buf;
   size_t len = 0;
@@ -192,9 +209,16 @@ void FcitxCskkEngine::loadDictionary() {
         constexpr auto var_len = sizeof(configDir) - 1;
         std::string realpath = path;
         if (stringutils::startsWith(path, configDir)) {
+#if FCITX_CSKK_HAS_STANDARDPATHS
+          realpath =
+              (StandardPaths::global().userDirectory(StandardPathsType::PkgData) /
+               path.substr(var_len))
+                  .string();
+#else
           realpath = stringutils::joinPath(
               StandardPath::global().userDirectory(StandardPath::Type::PkgData),
               path.substr(var_len));
+#endif
         }
         auto *userdict =
             skk_user_dict_new(realpath.c_str(), encoding.c_str(), complete);