# Uh oh, a serious error has occurred... **URL:** \ **Category:** Troubleshooting and Problems\ **Created:** [November 16, 2023, 2:19am UTC](https://forum.certara.com/t/uh-oh-a-serious-error-has-occurred/1981 "2023-11-16T02:19:12Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![wang.chuang](https://avatars.discourse-cdn.com/v4/letter/w/ee7513/32.png) [@wang.chuang](https://forum.certara.com/u/wang.chuang)\ **Post date:** [November 16, 2023, 2:19am UTC](https://forum.certara.com/t/uh-oh-a-serious-error-has-occurred/1981/1 "2023-11-16T02:19:12Z")
I Encounter this problem when start my pinnacle21. specified as the follow: To ensure proper functionality, the application must be restarted. We apologize for the inconvenience, and would like to prevent this from happening in the future. To help us with diagnosing what went wrong, please send us the error by clicking **Send Bug Report** Any additional information you could share with us would be great! Here is the Error log: [2023-11-16T01:08:51.287Z] [error] Error: Error: net::ERR\_CONNECTION\_RESET [2023-11-16T01:08:51.289Z] [error] net::ERR\_CONNECTION\_RESET [2023-11-16T01:08:51.289Z] [error] net::ERR\_CONNECTION\_RESET [2023-11-16T01:08:53.095Z] [error] read ECONNRESET [2023-11-16T01:08:53.101Z] [error] { [Error: net::ERR\_CONNECTION\_RESET] level: ‘error’, timestamp: ‘2023-11-16T01:08:51.289Z’, [Symbol(level)]: ‘error’, [Symbol(message)]: ‘[2023-11-16T01:08:51.289Z] [error] net::ERR\_CONNECTION\_RESET’ } [2023-11-16T01:08:54.122Z] [error] read ECONNRESET 2023-11-16 09:08:55 [main] ERROR net.bootstrap.utils.S3Loader - Failed to download file: /keys/cli\_key 2023-11-16 09:08:55 [RxIoScheduler-2] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/engine/engines\_v4.json 2023-11-16 09:08:56 [main] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/resources\_v4.json 2023-11-16 09:08:56 [RxIoScheduler-3] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/resources\_v4.json 2023-11-16 09:08:56 [RxIoScheduler-4] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/engine/engines\_v4.json 2023-11-16 09:08:59 [RxIoScheduler-3] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/resources\_v4.json 2023-11-16 09:08:59 [RxIoScheduler-4] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/resources\_v4.json [2023-11-16T01:09:00.944Z] [error] read ECONNRESET [2023-11-16T01:18:52.419Z] [error] read ECONNRESET [2023-11-16T01:21:30.087Z] [error] Error: Error: net::ERR\_CONNECTION\_RESET [2023-11-16T01:21:30.089Z] [error] net::ERR\_CONNECTION\_RESET [2023-11-16T01:21:30.089Z] [error] net::ERR\_CONNECTION\_RESET [2023-11-16T01:21:31.553Z] [error] read ECONNRESET [2023-11-16T01:21:31.558Z] [error] { [Error: net::ERR\_CONNECTION\_RESET] level: ‘error’, timestamp: ‘2023-11-16T01:21:30.089Z’, [Symbol(level)]: ‘error’, [Symbol(message)]: ‘[2023-11-16T01:21:30.089Z] [error] net::ERR\_CONNECTION\_RESET’ } [2023-11-16T01:21:31.610Z] [error] read ECONNRESET 2023-11-16 09:21:33 [main] ERROR net.bootstrap.utils.S3Loader - Failed to download file: /keys/cli\_key 2023-11-16 09:21:33 [RxIoScheduler-2] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/engine/engines\_v4.json 2023-11-16 09:21:33 [main] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/resources\_v4.json 2023-11-16 09:21:33 [RxIoScheduler-3] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/resources\_v4.json 2023-11-16 09:21:33 [RxIoScheduler-4] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/engine/engines\_v4.json 2023-11-16 09:21:36 [RxIoScheduler-3] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/resources\_v4.json 2023-11-16 09:21:36 [RxIoScheduler-4] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/resources\_v4.json [2023-11-16T01:21:38.527Z] [error] read ECONNRESET [2023-11-16T01:28:57.923Z] [error] Error: Error: net::ERR\_CONNECTION\_RESET [2023-11-16T01:28:57.928Z] [error] net::ERR\_CONNECTION\_RESET [2023-11-16T01:28:57.928Z] [error] net::ERR\_CONNECTION\_RESET [2023-11-16T01:28:59.709Z] [error] read ECONNRESET [2023-11-16T01:28:59.713Z] [error] { [Error: net::ERR\_CONNECTION\_RESET] level: ‘error’, timestamp: ‘2023-11-16T01:28:57.928Z’, [Symbol(level)]: ‘error’, [Symbol(message)]: ‘[2023-11-16T01:28:57.928Z] [error] net::ERR\_CONNECTION\_RESET’ } [2023-11-16T01:28:59.745Z] [error] read ECONNRESET 2023-11-16 09:29:01 [RxIoScheduler-2] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/engine/engines\_v4.json 2023-11-16 09:29:01 [main] ERROR net.bootstrap.utils.S3Loader - Failed to download file: /keys/cli\_key 2023-11-16 09:29:03 [RxIoScheduler-2] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/resources\_v4.json 2023-11-16 09:29:04 [main] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/resources\_v4.json 2023-11-16 09:29:03 [RxIoScheduler-3] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/engine/engines\_v4.json 2023-11-16 09:29:07 [RxIoScheduler-4] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/resources\_v4.json 2023-11-16 09:29:07 [RxIoScheduler-3] ERROR net.bootstrap.utils.S3Loader - Failed to download file: release/resources\_v4.json [2023-11-16T01:29:09.509Z] [error] read ECONNRESET [2023-11-16T01:38:59.779Z] [error] read ECONNRESET [p21community-2023-11-16.log](https://forum.certara.com/uploads/short-url/6oNPyFlMRgvcBhiZev7t1QDL1jh.log) (4.47 KB) ![screenshot-of-the-problem.png](https://us1.discourse-cdn.com/certara/original/1X/d494317c8af42bf7f0860d26af035683da6c3861.png)