Occurrences

Exception Occurrences

How many exceptions your application raised over the period, across every group. Read from retained summaries, so the history stays accurate even after individual occurrence records have been cleaned up. A rising trend is the signal to look at which groups are growing.

47 raised

93.8%

Compared to previous 7 days

Exception Rate

Exception Rate

Exceptions raised per 1,000 requests over the period. Occurrence counts on their own rise and fall with traffic; this figure does not, so it is the one to watch when you want to know whether the application itself got worse. Reads the all-groups exception rollup against the overall request summary. Exceptions raised inside background jobs are counted in the numerator but have no request to divide by, so a job-heavy application will read high.

9.4 per 1,000

89.2%

Compared to previous 7 days

Open Groups

Open Exception Groups

Distinct exception sites currently marked open — one per exception class and code location, not one per raise. Resolved and ignored groups are excluded. The period figure counts sites seen for the first time in this window, which is usually where a new bug shows up.

9 open

0 new this period

Exceptions

Exception Frequency

How often exceptions were raised over the selected period, across every group. Read from retained summaries rather than individual occurrence records, so the history stays accurate after cleanup has pruned old occurrences.

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Exception Status Last Seen First Seen Count ▲
ActiveRecord::RecordNotFound
app/controllers/comments_controller.rb#destroy
Couldn't find Comment with 'id'=8823
 Open Sep 24, 2026 6:00 AM Sep 15, 2026 5:33 AM 3
JSON::ParserError
app/controllers/api/v1/webhooks_controller.rb#receive
unexpected character (after ) at line 1, column 1
 Open Sep 19, 2026 1:40 PM Sep 10, 2026 5:43 AM 3
ArgumentError
app/jobs/report_generator_job.rb#perform
wrong number of arguments (given 0, expected 1)
 Open Sep 19, 2026 12:28 PM Sep 10, 2026 5:06 AM 3
Net::ReadTimeout
app/services/payment_service.rb#charge
execution expired
 Open Sep 24, 2026 6:00 AM Sep 16, 2026 5:55 AM 4
Errno::ECONNREFUSED
app/services/notification_service.rb#deliver
Connection refused - connect(2) for "127.0.0.1" port 6379
 Open Sep 24, 2026 6:00 AM Sep 13, 2026 5:23 AM 5
NoMethodError
app/models/user.rb#full_name
undefined method 'email' for nil:NilClass
 Open Sep 22, 2026 9:32 PM Sep 11, 2026 5:38 AM 6
ActiveRecord::RecordInvalid
app/models/post.rb#create!
Validation failed: Title is too long (maximum is 255 characters)
 Open Sep 24, 2026 6:00 AM Sep 15, 2026 5:44 AM 6
ActionController::ParameterMissing
app/controllers/users_controller.rb#user_params
param is missing or the value is empty: email
 Open Sep 24, 2026 5:04 AM Sep 12, 2026 5:42 AM 7
ActiveRecord::RecordNotFound
app/controllers/posts_controller.rb#show
Couldn't find Post with 'id'=9001
 Open Sep 24, 2026 6:00 AM Sep 16, 2026 5:31 AM 10
Total of 9 record(s).
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