CORS Error: Preflight request failedCORS Error: Preflight request failed
The browser's CORS preflight OPTIONS request was rejected or returned invalid CORS headers.
TypeError: Converting circular structure to JSONJSON.stringify() encountered an object with circular references that cannot be serialized to JSON.
The object you are trying to stringify contains circular references (an object that references itself directly or through a chain). JSON does not support circular structures.
Use a custom replacer function with JSON.stringify() to handle circular references. Use a library like flatted or json-stringify-safe. Identify and remove the circular reference, or use structuredClone() to create a deep copy first.
const obj = {}; obj.self = obj; JSON.stringify(obj); // TypeErrorCORS Error: Preflight request failedThe browser's CORS preflight OPTIONS request was rejected or returned invalid CORS headers.
SyntaxError: JSON.parse unexpected characterJSON.parse() encountered invalid JSON syntax, such as single quotes, trailing commas, or unquoted keys.
ENFILEThe system-wide limit on the total number of open files has been reached.
ERR_BUFFER_OUT_OF_BOUNDSAn attempt was made to read or write outside the bounds of a Buffer.
TypeError: Cannot set properties of undefined/nullAn attempt was made to set a property on undefined or null.
SyntaxError: Cannot use import statement outside a moduleES module import syntax was used in a file that is not treated as a module.