Le-Ko — PostHog error health snapshot

Focus: what errors got worse, where they happen, and what blocks app usage

Current period: 12 Jun – 18 Jun 2026 · Comparison: 05 Jun – 11 Jun 2026
Report generated: 22 June 2026 · Source: PostHog Error Tracking ($exception + onboarding events)

Executive summary PostHog Error Tracking

270

Total exceptions

+297.1% vs prior week

Users affected

+60.0% vs prior week

Distinct issues

+119.2% vs prior week

Overall volume worsened vs prior week

Exceptions rose from 68 to 270 (+297.1%). Users affected: 15 → 24. Prior week spike on 2026-06-05 (25 events) was mostly onboarding validation noise.

Breaking errors this week (specific)

Phone could not reach our servers — App-blocking — 2 times, ~1 users (iOS + Android combined). No connection = app cannot load live data.
Events list failed to load — Feature-blocking — community/events section breaks for affected users.
Action not allowed for this account (403) — Feature-blocking — that specific action is refused.
Background lookup failed — Noise — 117 hits, 1 user. Not a mass user outage.
About text is too long — Step-blocking — user must shorten bio to continue signup.
Booking time clash — Degraded — only that booking fails.
User cancelled before finishing — Degraded — not a crash.

Login / OTP (not the same as SMS failure)

Wrong verification code (1 → 18): user typed an incorrect or expired code — the SMS was delivered. Failure rate after submit: 25.4% (18/71).
SMS could not be sent (0 → 1): separate, more serious — user never gets a code. True login blocker.
OTP funnel this week: requested 69 → submitted 71 → succeeded 49.

Error overview Volume & source

Daily exceptions (Day 1–7 aligned)

This week peaked on Day 3 (138 exceptions on 2026-06-16).

Exceptions by SDK / source

Source	This week	Users	Prior week	Users
Mobile (posthog-react-native)	270	24	68	15
Backend (posthog-node)	—	—	—	—

Most common errors By issue

Where errors happen

Most problems fall into a few buckets: phone lost connection, events list could not load, signup validation (text too long, bad nickname), and background server checks that rarely affect real users. Same user-facing error on iPhone and Android is shown as one row. Use the Context column for what happened and how to debug.

Top issues this week (by occurrences)

Error	Context	Breaking?	Occurrences	Users	Prior occ.	Prior users	Area
Something went wrong in the app	An error was logged. See technical label below for engineers. Device: Android, iOS. Technical details Label: Error: connect ECONNREFUSED 172.18.192.32:6432 (merged 2 PostHog issues) Exception: Error · connect ECONNREFUSED 172.18.192.32:6432 SDK: posthog-react-native App version: 3.8.0 PostHog issue: 019ed09c-a200-7792-a0e4-e455a78e266d, 019ed0a3-016b-7c40-955b-f62f037b96b5 Merged fingerprints: 2 Notes: connect ECONNREFUSED 172.18.192.32:6432	Degraded only	37	4	—	—	mobile app
Something went wrong in the app	An error was logged. See technical label below for engineers. Device: iOS. Technical details Label: Error: {"message":"odyssey: c4461f35b73f6: too many active clients for user (pool_size… Exception: Error · {"message":"odyssey: c4461f35b73f6: too many active clients for user (pool_size for user backend.backend reached 10)","status":500} SDK: posthog-react-native App version: 4.0.0 PostHog issue: 019e8768-1f6c-7a80-b005-7b86232d0afb Notes: {"message":"odyssey: c4461f35b73f6: too many active clients for user (pool_size for user backend.backend reached 10)","status":500}	Degraded only	34	2	—	—	mobile app
Something went wrong in the app	An error was logged. See technical label below for engineers. Device: Android. Technical details Label: Error: odyssey: c1ca6ac4d38cd: too many active clients for user (pool_size for user ba… Exception: Error · odyssey: c1ca6ac4d38cd: too many active clients for user (pool_size for user backend.backend reached 10) SDK: posthog-react-native App version: 3.8.0 PostHog issue: 019ed112-5b0e-7af2-bf44-087aa014abdb Notes: odyssey: c1ca6ac4d38cd: too many active clients for user (pool_size for user backend.backend reached 10)	Degraded only	34	4	—	—	mobile app
Something went wrong in the app	An error was logged. See technical label below for engineers. Device: Android, iOS. Technical details Label: TypeError: undefined is not a function (merged 2 PostHog issues) Exception: TypeError · undefined is not a function SDK: posthog-react-native App version: 4.0.0 PostHog issue: 019ed520-fc85-7f92-8715-6fc958b7f187, 019ed570-cfb0-79e1-9a6c-564b43525642 Merged fingerprints: 2 Notes: undefined is not a function	Degraded only	21	4	7	4	mobile app
Something went wrong in the app	An error was logged. See technical label below for engineers. Device: iOS. Technical details Label: Error: [{"_id":"getCoachExplorerFilter","baseUrl":"https://backend.staging.le-ko.ru","… (merged 3 PostHog issues) Exception: Error · [{"_id":"getCoachExplorerFilter","baseUrl":"https://backend.staging.le-ko.ru","query":{"eligibility":"all","format":"offline","latitude":39.472186,"locale":"en","longitude":-0.370869,"maxDistance":50… SDK: posthog-react-native App version: 3.8.0, 4.0.0 PostHog issue: 019ed592-93e4-7b40-9c02-d1c63ce15dd7, 019ed0e5-fb7f-7ed3-b0dd-56da8071e8a1 (+1 more) Merged fingerprints: 3 Notes: [{"_id":"getCoachExplorerFilter","baseUrl":"https://backend.staging.le-ko.ru","query":{"eligibility":"all","format":"offline","latitude":39.472186,"locale":"en…	Degraded only	15	4	—	—	mobile app
Something went wrong in the app	An error was logged. See technical label below for engineers. Device: iOS. Technical details Label: Error: odyssey: cd0514458136b: too many active clients for user (pool_size for user ba… Exception: Error · odyssey: cd0514458136b: too many active clients for user (pool_size for user backend.backend reached 10) SDK: posthog-react-native App version: 3.8.0 PostHog issue: 019ed0ea-58cf-76e0-9ff0-bee9fe7805b8 Notes: odyssey: cd0514458136b: too many active clients for user (pool_size for user backend.backend reached 10)	Degraded only	14	1	—	—	mobile app
Something went wrong in the app	An error was logged. See technical label below for engineers. Device: Android, iOS. Technical details Label: Error: {"message":"WEB_PROFILE_INVALID_URL","status":422} (merged 2 PostHog issues) Exception: Error · {"message":"WEB_PROFILE_INVALID_URL","status":422} SDK: posthog-react-native App version: 3.8.0 PostHog issue: 019ecafd-3da8-7b52-ad86-efaa90826a3c, 019ecfdf-c206-78d1-a16b-7f90fddbcd3b Merged fingerprints: 2 Notes: {"message":"WEB_PROFILE_INVALID_URL","status":422}	Degraded only	14	2	2	2	mobile app
Something went wrong in the app	An error was logged. See technical label below for engineers. Device: Android. Technical details Label: Error: Ocorreu um erro inesperado. (merged 2 PostHog issues) Exception: Error · Ocorreu um erro inesperado. SDK: posthog-react-native App version: 4.0.0 PostHog issue: 019edb9b-6893-7801-89bd-0336dd5b206e, 019edb41-ae03-7272-b6eb-2080364e8924 Merged fingerprints: 2 Notes: Ocorreu um erro inesperado.	Degraded only	11	5	—	—	mobile app
Something went wrong in the app	An error was logged. See technical label below for engineers. Device: iOS. Technical details Label: Error: odyssey: c801973405222: too many active clients for user (pool_size for user ba… Exception: Error · odyssey: c801973405222: too many active clients for user (pool_size for user backend.backend reached 10) SDK: posthog-react-native App version: 3.8.0 PostHog issue: 019ed0e5-fb7e-79c2-9fe7-d4f7c482a50a Notes: odyssey: c801973405222: too many active clients for user (pool_size for user backend.backend reached 10)	Degraded only	9	2	—	—	mobile app
Something went wrong in the app	An error was logged. See technical label below for engineers. Device: Android. Technical details Label: Error: odyssey: ca3f7982cec4e: too many active clients for user (pool_size for user ba… Exception: Error · odyssey: ca3f7982cec4e: too many active clients for user (pool_size for user backend.backend reached 10) SDK: posthog-react-native App version: 3.8.0 PostHog issue: 019ed0f7-eb7b-7040-94af-b531aad95b98 Notes: odyssey: ca3f7982cec4e: too many active clients for user (pool_size for user backend.backend reached 10)	Degraded only	8	2	—	—	mobile app
Something went wrong in the app	An error was logged. See technical label below for engineers. Device: Android. Technical details Label: Error: odyssey: c788e0f308140: too many active clients for user (pool_size for user ba… Exception: Error · odyssey: c788e0f308140: too many active clients for user (pool_size for user backend.backend reached 10) SDK: posthog-react-native App version: 4.0.0 PostHog issue: 019ed4b0-7cb1-70e1-b4e7-5b5c75236ee8 Notes: odyssey: c788e0f308140: too many active clients for user (pool_size for user backend.backend reached 10)	Degraded only	8	1	—	—	mobile app
Something went wrong in the app	An error was logged. See technical label below for engineers. Device: iOS. Technical details Label: Error: {"message":"WORKOUT_ENRICHMENT_ERROR","status":500} Exception: Error · {"message":"WORKOUT_ENRICHMENT_ERROR","status":500} SDK: posthog-react-native App version: 3.8.0 PostHog issue: 019ed0a2-2b03-7cc2-91c0-3316bb5d81de Notes: {"message":"WORKOUT_ENRICHMENT_ERROR","status":500}	Degraded only	5	2	—	—	mobile app

Critical errors App- & feature-blocking · week-over-week

App/feature-blocking issues: this week vs prior week

Onboarding & login errors Signup & setup path

Onboarding exceptions

-63.6% vs prior week

LoginOtpFailed (wrong code)

+1700.0% vs prior week

SMS send failures

n/a

Wrong code ≠ SMS not delivered

When someone enters a bad verification code, they see: “The code is not correct. Please request another code or try again.” The text message already arrived — they can retry. This is not the same as failing to send the SMS.

SMS could not be sent — true login blocker

1 users hit “Could not send the verification code” this week. They cannot move past phone entry until send works. Watch this number closely.

About text too long blocks one signup step

Users who write more than 500 characters in About must shorten their bio before continuing. Annoying but fixable — the rest of the app still works.

Step	Events This week	Users This week	Events Prior week	Users Prior week
SMS code requested User asked us to send a verification text.	69	31	47	28
Verification code entered User typed a code and tapped submit (includes retries).	71	31	48	28
Login succeeded Code was accepted and login completed.	49	26	47	28
Wrong or expired code Code rejected — SMS was sent; user can try again.	18	9	1	1

How to read these numbers

Events ≠ users. One person retrying a bad code many times creates many failure events. This week: 18 failures from 9 users. Prior week: 1 failures from 1 users.
User-level impact: only 3.6% of people who requested an SMS in the prior week (1 of 28) had at least one wrong-code failure. This week: 29.0% (9 of 31).
Submits > requests is normal — users often submit several times before getting it right.
Prior-week spike: 1 wrong-code events on 2026-06-09 from only 1 users — likely heavy retries or testing, not a mass login outage.
Wrong-code failures are not SMS delivery failures. See SMS send failures below for true blockers.

LoginOtpFailed reasons (this week)

Error message shown to user	Count	Users
Ocorreu um erro inesperado. Shown in app: Ocorreu um erro inesperado.	13	5
Wrong or expired code — user can try again or request a new SMS Shown in app: The code is not correct. Please request another code or try again.	2	2
Произошла непредвиденная ошибка. Shown in app: Произошла непредвиденная ошибка.	2	1
An unexpected error has occurred. Shown in app: An unexpected error has occurred.	1	1

SMS send failures (this week)

Event	Message	Count	Users
ActionPhoneVerificationError	Could not send the verification code (SMS gateway or phone issue) Technical: Не удалось отправить код. Попробуйте снова.	1	1

Onboarding-related exceptions this week

Onboarding exception	Context	Breaking?	Occurrences	Users	Prior occ.	Prior users	Area
About text is too long	User is on the About step during signup and must shorten their bio before continuing. Technical details Label: Onboarding About: text exceeds 500 chars Exception: Error · {"type":"validation","on":"body","property":"/about","message":"Expected string length less or equal to 500","summary":"Expected string length less or equal to 500","expected":{},"found":{"name":"Ser… SDK: posthog-react-native App version: 3.8.0 PostHog issue: 019ebaa7-bbb7-78c3-9fda-c1dca07dccdd Debug hint: Validation on /about body — max 500 chars. exc_value contains JSON validation payload.	Step-blocking	4	1	—	—	onboarding — About step

Step-blocking only (user can fix & retry)

Error	Context	Breaking?	Occurrences	Users	Prior occ.	Prior users	Area
About text is too long	User is on the About step during signup and must shorten their bio before continuing. Technical details Label: Onboarding About: text exceeds 500 chars Exception: Error · {"type":"validation","on":"body","property":"/about","message":"Expected string length less or equal to 500","summary":"Expected string length less or equal to 500","expected":{},"found":{"name":"Ser… SDK: posthog-react-native App version: 3.8.0 PostHog issue: 019ebaa7-bbb7-78c3-9fda-c1dca07dccdd Debug hint: Validation on /about body — max 500 chars. exc_value contains JSON validation payload.	Step-blocking	4	1	—	—	onboarding — About step