Don't add sys instruction if empty

cf44ac8c1f2537df3cfb40a214b307c58455c6ab

Cohee <18619528+Cohee1207@users.noreply.github.com>

src/endpoints/backends/chat-completions.js+1 -1 Viewed

             generationConfig: generationConfig,
         };
-        if (useSystemPrompt) {
+        if (useSystemPrompt && Array.isArray(prompt.system_instruction) && prompt.system_instruction.length) {
             body.systemInstruction = prompt.system_instruction;
+        }