FormatException was thrown

İ couldnt find any information about it . I got this error but there is no reason . Anybody know smth ??

The following FormatException was thrown Thrown when reading the file containing cache info. The cached files cannot be used by the cache manager anymore.:
Unexpected character (at character 357)
...1720914088915,"length":null,"_id":1}]720914088881,"length":156312,"_id":1}]

No source file, test, reproduction steps, or requested change is identified. Start by locating the cache-info file parsing entry point and inspect the malformed input around character 357; the expected handling and a completion test would need to be clarified.

Written by the indexing model from the issue text.