Statistics in some papers but not in others

Hi, in our recent RPICS edition, statistics appear in some papers but not in others of the same issue. Here is one example of each:
Any inputs? Many thanks, Helena

Hi Helena,

Are there any recorded stats for the first submission if you look at the generated reports from within the tools/statistics section?


Hi Jason, thanks for the quick response.
If I understand you correctly, the answer is yes: stats appear to all the papers. Please see the attached image of the report.08
Looking forward, Helena

None of the links are working. What is your PHP version? It seems like it is below 7. also you seem to be using

We updated to OJS yesterday and papers disappeared!! PHP version is 7.0.33-0+deb9u2!
We are in distress with this late happening, and statistics seems now our lesser problem.
Your inputs would be much appreciated.
Best, Helena

Papers disappeared because of plugin
pkp/citationStyleLanguage. For now, there are still some small problems to fix, but major issues are solved. Many thanks. Helena