New comment by ruegerjr on void-packages repository

https://github.com/void-linux/void-packages/issues/13671#issuecomment-527284216

Comment:
Additional clues from jsconsole.   I suspect the "invalid array length" is important.

```
SearchService.init
_init start
SearchService.init
_readCacheFile: Error reading cache file: RangeError: invalid array length
```
Then later:

`_loadEngines: Absent or outdated cache. Loading engines from disk.`

and
```
batchTask: Invalidating engine cache
_buildCache: Writing to cache file.
_buildCache: cache file written to disk.
_readCacheFile: Error reading cache file: RangeError: invalid array length

```