LLM did not conform to the edit | SEARCH/REPLACE block failed to match!

[O-m-k-a-r]

Issue

While using Aider it , correctly identifies the changes to be done in the repo, but it is not able to make those changes in the code. It gives below mentioned error, I have also tried using various edit formats after reading File editing problems troubleshooting guide.

The LLM did not conform to the edit format.
https://aider.chat/docs/troubleshooting/edit-errors.html

 1 SEARCH/REPLACE block failed to match!

 SearchReplaceNoExactMatch: This SEARCH block failed to exactly match lines 
in change_demo\CreateAnItems (1).cpp

The SEARCH section must exactly match an existing block of lines including all 
white space, comments, indentation, docstrings, etc

Please provide a solution to this issue.

Version and model info

Aider v0.77.1
Model: azure/gpt-4o-mini with architect edit format
Editor model: azure/gpt-4o-mini with diff edit format
Git repo: .git with 0 files
Repo-map: using 4096 tokens, auto refresh

[DebashisSahoo2001]

I am Getting same issue with architect mode. Suggest some solution to resolve it.