claude-code - 💡(How to fix) Fix Resume crash: Cannot read properties of null (reading 'split') in diff renderer when conversation contains file creation results [2 comments, 3 participants]

ERROR Cannot read properties of null (reading 'split')

• Error appears immediately when opening the conversation from the resume list

TL;DR

The most likely fix is to null-coalesce the originalFile variable in the O6q function to prevent calling split() on null.

Guidance

• Verify the issue by checking if the error occurs when resuming conversations that contain file-creation tool results.
• Apply the suggested fix by modifying the O6q function to null-coalesce the originalFile variable.
• As a temporary workaround, patch affected .jsonl files in ~/.claude/projects/ by replacing "originalFile":null with "originalFile":"" in toolUseResult records.
• Test the fix by resuming a conversation that previously caused the crash and verify that it no longer occurs.

Example

function O6q({filePath:A, structuredPatch:q, originalFile:K}, ...) {
  const safeOriginal = K ?? '';  // null for new file creations
  return createElement(dV1, {firstLine: safeOriginal.split(...)
}

Notes

This fix assumes that an empty string is a semantically correct replacement for null when a new file is created. If this is not the case, further modifications may be necessary.

Recommendation

Apply the workaround by patching the affected .jsonl files, as this provides a temporary solution until the fix can be implemented and verified.