Why am I getting a 502 running an app on SCP?

[YanGerzon]

Hi,

I have written an app in java on SAP BTP.
It makes http calls to create purchase orders on SAP BYD.

It usually works fine but sometimes i get a "proxy error: EOF".
This crashes the run.
If i run the code locally form my computer it never happens.
Would greatly appreciate ANY help.

the full log:

2022/02/13 14:01:08 http: proxy error: EOF
2022/02/13 14:01:08 App exited. err: signal: killed, Restarting 
2022/02/13 14:01:08 Starting app: bash -c 'JRE_HOME="META-INF/.sap_java_buildpack/sapjvm" JBP_CONFIG_SAPJVM_MEMORY_STACK_THREADS="250"    JBP_CLASSPATH="" JBP_CONFIG_SAPJVM_MEMORY_CLASS_COUNT="" JAVA_HOME="META-INF/.sap_java_buildpack/sapjvm"    CATALINA_HOME="META-INF/.sap_java_buildpack/tomcat" JAVA_OPTS=" -Xmn10M -Xms30M    -Xmx100M -Xss3M  -Djava.io.tmpdir=$TMPDIR -Dhttp.port=3000 -Daccess.logging.enabled=false    -Dlogback.configurationFile=file:META-INF/.sap_java_buildpack/tomcat/conf/logback.xml    -DSAPJVM_EXTENSION_COMMAND_HANDLER=com.sap.xs2rt.dropletaddon.JvmExtensionCommandHandler    -Djava.protocol.handler.pkgs=com.sap.xs.statistics.stream.handling.protocols -agentpath:/app/META-INF/.sap_java_buildpack/jvm_kill/jvmkill-1.12.0.RELEASE-trusty.so=printHeapHistogram=1    -Dsun.net.inetaddr.ttl=0 -Dsun.net.inetaddr.negative.ttl=0" ./META-INF/.sap_java_buildpack/tomcat/bin/catalina.sh    run' 
Working dir: /home/vcap/app
7thz8ncctnmsejb8msf-uploadvendors.cfapps.eu10.hana.ondemand.com - [2022-02-13T13:58:33.733250213Z] "POST /UploadAP HTTP/1.1" 502 0 0 "-" "PostmanRuntime/7.28.4" "10.0.200.10:2528" "10.0.137.160:61325" x_forwarded_for:"193.238.189.12, 10.0.200.10" x_forwarded_proto:"https" vcap_request_id:"f116817c-8ae5-496b-5cc4-459e76f75480" response_time:154.346781 gorouter_time:0.000039 app_id:"350af5b4-9d1a-414f-aee9-8dbddd3cb70d" app_index:"0" instance_id:"94d03ae5-fd2f-43ec-4e64-0912" x_cf_routererror:"-" x_correlationid:"-" tenantid:"-" sap_passport:"-" x_scp_request_id:"eb98f653-0ee4-4def-874d-c097480dd2da-62090E89-54B264" x_cf_app_instance:"-" x_forwarded_host:"-" x_custom_host:"-" x_ssl_client:"-" x_ssl_client_session_id:"-" x_ssl_client_verify:"-" x_ssl_client_subject_dn:"-" x_ssl_client_subject_cn:"-" x_ssl_client_issuer_dn:"-" x_ssl_client_notbefore:"-" x_ssl_client_notafter:"-" x_b3_traceid:"448f4030497c0bca118c05575a401f93" x_b3_spanid:"448f4030497c0bca118c05575a401f93" x_b3_parentspanid:"-" b3:"448f4030497c0bca118c05575a401f93-448f4030497c0bca118c05575a401f93"
time="2022-02-13T14:01:08Z" level=error msg="handleOutLogs:read |0: file already closed"
time="2022-02-13T14:01:08Z" level=error msg="handleErrLogs:read |0: file already closed"
7thz8ncctnmsejb8msf-uploadvendors.cfapps.eu10.hana.ondemand.com - [2022-02-13T13:53:41.092051117Z] "GET /getApplicationLogs HTTP/1.1" 101 0 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.99 Safari/537.36" "10.0.136.9:5720" "10.0.137.160:61325" x_forwarded_for:"193.238.189.12, 10.0.136.9" x_forwarded_proto:"https" vcap_request_id:"fbd75211-8da4-431d-6c76-0209973227c9" response_time:446.988174 gorouter_time:446.988174 app_id:"350af5b4-9d1a-414f-aee9-8dbddd3cb70d" app_index:"0" instance_id:"94d03ae5-fd2f-43ec-4e64-0912" x_cf_routererror:"-" x_correlationid:"-" tenantid:"-" sap_passport:"-" x_scp_request_id:"4a4401b0-439c-4fe0-8bfd-15daa19caca9-62090D64-5F82B6" x_cf_app_instance:"-" x_forwarded_host:"-" x_custom_host:"-" x_ssl_client:"-" x_ssl_client_session_id:"-" x_ssl_client_verify:"-" x_ssl_client_subject_dn:"-" x_ssl_client_subject_cn:"-" x_ssl_client_issuer_dn:"-" x_ssl_client_notbefore:"-" x_ssl_client_notafter:"-" x_b3_traceid:"608af6fcf2132ecf22555a5afcedbd85" x_b3_spanid:"608af6fcf2132ecf22555a5afcedbd85" x_b3_parentspanid:"-" b3:"608af6fcf2132ecf22555a5afcedbd85-608af6fcf2132ecf22555a5afcedbd85"
{ "written_at":"2022-02-13T14:01:09.616Z","written_ts":212141380041369,"tenant_id":"-","component_type":"application","component_id":"350af5b4-9d1a-414f-aee9-8dbddd3cb70d","space_name":"dev","component_name":"7thz8nCcTnMsEjb8MSF-UploadVendors","component_instance":"0","organization_id":"-","correlation_id":"-","organization_name":"-","space_id":"ef439c9c-3910-4559-9bcd-ebd826e25d29","container_id":"10.0.137.160","type":"log","logger":"org.apache.catalina.startup.Catalina","thread":"main","level":"INFO","categories":[],"msg":"Initialization processed in 493 ms" }
{ "written_at":"2022-02-13T14:01:09.690Z","written_ts":212141452749866,"tenant_id":"-","component_type":"application","component_id":"350af5b4-9d1a-414f-aee9-8dbddd3cb70d","space_name":"dev","component_name":"7thz8nCcTnMsEjb8MSF-UploadVendors","component_instance":"0","organization_id":"-","correlation_id":"-","organization_name":"-","space_id":"ef439c9c-3910-4559-9bcd-ebd826e25d29","container_id":"10.0.137.160","type":"log","logger":"org.apache.catalina.core.StandardService","thread":"main","level":"INFO","categories":[],"msg":"Starting service [Catalina]" }
{ "written_at":"2022-02-13T14:01:09.690Z","written_ts":212141453192774,"tenant_id":"-","component_type":"application","component_id":"350af5b4-9d1a-414f-aee9-8dbddd3cb70d","space_name":"dev","component_name":"7thz8nCcTnMsEjb8MSF-UploadVendors","component_instance":"0","organization_id":"-","correlation_id":"-","organization_name":"-","space_id":"ef439c9c-3910-4559-9bcd-ebd826e25d29","container_id":"10.0.137.160","type":"log","logger":"org.apache.catalina.core.StandardEngine","thread":"main","level":"INFO","categories":[],"msg":"Starting Servlet Engine: Apache Tomcat/8.5.42" }
{ "written_at":"2022-02-13T14:01:10.305Z","written_ts":212142068616598,"tenant_id":"-","component_type":"application","component_id":"350af5b4-9d1a-414f-aee9-8dbddd3cb70d","space_name":"dev","component_name":"7thz8nCcTnMsEjb8MSF-UploadVendors","component_instance":"0","organization_id":"-","correlation_id":"-","organization_name":"-","space_id":"ef439c9c-3910-4559-9bcd-ebd826e25d29","container_id":"10.0.137.160","type":"log","logger":"org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/]","thread":"localhost-startStop-1","level":"ERROR","categories":[],"msg":"For security constraints with URL pattern [/*] only the HTTP methods [HEAD OPTIONS] are covered. All other methods are uncovered." }
{ "written_at":"2022-02-13T14:01:10.434Z","written_ts":212142196888791,"tenant_id":"-","component_type":"application","component_id":"350af5b4-9d1a-414f-aee9-8dbddd3cb70d","space_name":"dev","component_name":"7thz8nCcTnMsEjb8MSF-UploadVendors","component_instance":"0","organization_id":"-","correlation_id":"-","organization_name":"-","space_id":"ef439c9c-3910-4559-9bcd-ebd826e25d29","container_id":"10.0.137.160","type":"log","logger":"org.apache.catalina.startup.Catalina","thread":"main","level":"INFO","categories":[],"msg":"Server startup in 783 ms" }