Describe the bug.
Error: "n is not iterable" when Copilot attempts to use file editing tools
Affected tools: replace_string_in_file, file_search, grep_search, get_errors, and others
Impact: Copilot cannot make code edits or perform basic file operations
Date: April 1,2026
Version: 1.111.0 (system setup)
Commit: ce099c1ed25d9eb3076c11e4a280f3eb52b4fbeb
Date: 2026-03-06T23:06:10Z
GitHub CoPilot Chat: 0.39.2
Please attach log file(s) here if you have any.
The log file location should be copied to your clipboard if you came from VS Code.
Reproduction Steps
Agent mode fails. Cannot use any internal tools
Expected Behavior
Agent should be able to change code as usual
Exceptions & Errors (if any)
No response
.NET Install Tool Version
v3.0.0
Your operating system? Please provide more detail, such as the version and or distro above.
N/A
VS Code Version
No response
Describe the bug.
Error: "n is not iterable" when Copilot attempts to use file editing tools
Affected tools: replace_string_in_file, file_search, grep_search, get_errors, and others
Impact: Copilot cannot make code edits or perform basic file operations
Date: April 1,2026
Version: 1.111.0 (system setup)
Commit: ce099c1ed25d9eb3076c11e4a280f3eb52b4fbeb
Date: 2026-03-06T23:06:10Z
GitHub CoPilot Chat: 0.39.2
Please attach log file(s) here if you have any.
The log file location should be copied to your clipboard if you came from VS Code.
Reproduction Steps
Agent mode fails. Cannot use any internal tools
Expected Behavior
Agent should be able to change code as usual
Exceptions & Errors (if any)
No response
.NET Install Tool Version
v3.0.0
Your operating system? Please provide more detail, such as the version and or distro above.
N/A
VS Code Version
No response