As@SVillette pointed out to me via Symfony Slack, the current profiler before this PR already displayed the "log counter":

So, the real problem might be that the log counter of LoggerProfiler doesn't work.

@SVillette also mentioned that doing the following change inLoggerDataCollector::getProcessedLogs() solve the problem for them:

$logs[] = [  ...'errorCounter' =>isset($rawLogData['errorCounter']) ?$rawLogData['errorCounter']->getValue() :1,'errorCount' =>$rawLog['errorCount'] ??1,// The line I added to make it worked  ...];

I need help to know how to move forward with this. Thanks!

This could qualify as a bug fix IMHO.
About the count, "15" looks like it's correct to me.

Hi@nicolas-grekas, I will clarify a little about what has been done.

The issue is not about global count ("15") but the count per log ("5 times").
Symfony 5.4 added a new methodLoggerDataCollector::getProcessedLogs() that introducederrorCounter when processing a single log, but the template (Collector/logger.html.twig at line 241) only displaylog.errorCount which is never defined.

publicfunctiongetProcessedLogs(){...$logs[] = [...'errorCounter' =>isset($rawLogData['errorCounter']) ?$rawLogData['errorCounter']->getValue() :1,    ];...return$this->processedLogs =$logs;}

{%macro render_log_message(category,log_index,log) %}...    {%iflog.errorCountisdefinedandlog.errorCount>1 %}         <spanclass="log-num-occurrences">{{log.errorCount }} times</span>    {%endif %}...{%endmacro %}

" the current profiler before this PR already displayed the "log counter""

To reformulate what@javiereguiluz said, the template was already displaying the right information but theLoggerDataCollector does not pass theerrorCount when getting the processed logs.

From what I debugged$rawLogData['errorCounter'] is not defined and soerrorCounter value is always 1. I cannot affirm this is always the case.

So that's why I just modifiederrorCounter byerrorCount in theLoggerDataCollector. In addition,$rawLogData does not contain neithererrorCounter norerrorCount so I just used$rawLog['errorCount'].

$logs[] = ['errorCount' =>$rawLog['errorCount'] ??1,];

I hope my explanation are clear, I can open a PR if you consider it is a bug fix.

Finally, I want to add that a global search onerrorCounter only displayLoggerDataCollector::getProcessedLogs() andLoggerDataCollector::testCollectFromDeprecationsLog(). I don't see any other usages.

Closing in favor of a better fix in#45302. Thanks!