With Matomo 3.6.1, PHP 7.2, MySQL 5.7, the Apache error log is filled with the following error.
End of script output before headers: index.php, referer: https://.../index.php?module=CoreHome&action=index&date=today&period=day&idSite=6&updated=1
End of script output before headers: index.php, referer: https://.../index.php?module=CoreHome&action=index&date=today&period=day&idSite=6&updated=2
End of script output before headers: index.php, referer: https://.../index.php?module=CoreHome&action=index&idSite=1&period=day&date=yesterday
The query arguments vary. But it is always rooted in index.php of the Matomo installation directory.
Also, in dashboard, I always see this so I have to reload the page but at least one widget gives this, not sure if it is related.
Oops… there was a problem during the request. Maybe the server had a temporary issue, or maybe you requested a report with too much data. Please try again. If this error occurs repeatedly please contact your Matomo administrator for assistance.
The index.php permission is set to 755. In the apcu section of phpinfo() looks like this.
| APCu Support | Enabled |
|---|---|
| Version | 5.1.11 |
| APCu Debugging | Disabled |
| MMAP Support | Enabled |
| MMAP File Mask | no value |
| Serialization Support | php |
| Build Date | Sep 14 2018 11:24:15 |
| Directive | Local Value | Master Value |
|---|---|---|
| apc.coredump_unmap | Off | Off |
| apc.enable_cli | Off | Off |
| apc.enabled | On | On |
| apc.entries_hint | 4096 | 4096 |
| apc.gc_ttl | 3600 | 3600 |
| apc.mmap_file_mask | no value | no value |
| apc.preload_path | no value | no value |
| apc.serializer | php | php |
| apc.shm_segments | 1 | 1 |
| apc.shm_size | 32M | 32M |
| apc.slam_defense | On | On |
| apc.smart | 0 | 0 |
| apc.ttl | 0 | 0 |
| apc.use_request_time | On | On |
| apc.writable | /tmp | /tmp |
Where else should I look for the cause of the error?