claude-code - 💡(How to fix) Fix [Bug] Claude Opus 4.7 generating inappropriate casual slang in professional contexts [1 comments, 2 participants]

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/prodanstatev/.local/share/claude/versions/2.1.118 (expected in multi-process scenarios)\n at ai_ (/$bunfs/root/src/entrypoints/cli.js:2756:2177)\n at IK8 (/$bunfs/root/src/entrypoints/cli.js:2756:1257)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-23T04:22:13.751Z"},{"error":"MaxFileReadTokenExceededError: File content (68381 tokens) exceeds maximum allowed tokens (25000). Use offset and limit parameters to read specific portions of the file, or search for specific content instead of reading the whole file.\n at i07 (/$bunfs/root/src/entrypoints/cli.js:4696:12702)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-23T04:23:11.287Z"}]

TL;DR

The issue with Opus 4.7 generating an inappropriate response may be related to errors encountered during its operation, such as lock acquisition failures or exceeding maximum allowed tokens when reading files.

Guidance

• Review the error messages provided, particularly the Lock acquisition failed and MaxFileReadTokenExceededError, to understand potential causes of the model's behavior.
• Consider adjusting the file reading approach to use offset and limit parameters as suggested by the MaxFileReadTokenExceededError to prevent exceeding the maximum allowed tokens.
• Investigate multi-process scenarios that might be causing the lock acquisition failure and assess if there's a need for synchronization or locking mechanisms in the application.
• Evaluate the model's training data and configuration to ensure it aligns with the expected output and doesn't contain biases that could lead to inappropriate responses.

Example

No specific code example can be provided without more context on the application's codebase, but adjusting file reading to use offset and limit could look something like this in a hypothetical scenario:

// Hypothetical example of reading a file with offset and limit
const readFileWithOffsetLimit = (filePath, offset, limit) => {
  // Implementation details would depend on the actual file reading function used
  // This is a placeholder to illustrate the concept
  const fileContent = readFile(filePath);
  return fileContent.slice(offset, offset + limit);
};

Notes

The provided information does not directly point to a simple fix for the model's response issue. The errors suggest potential problems with file access and processing, which might indirectly affect the model's behavior. Further investigation into the application's code, the model's training data, and its configuration is necessary.

Recommendation

Apply workaround: Adjust the file reading approach to prevent errors and review the model's configuration and training data to ensure they are appropriate for the task at hand. This is recommended because directly upgrading or applying a specific fix is not clearly