grafana-zabbix: request failed, status: 500 Internal Server Error

Describe the bug When try to get metrics from group of hosts (more than 50) --> Error ‘request failed, status: 500 Internal Server Error’ Can it be from plugin error, because with old (3version) plugin it worked normal?

Log

t=2021-12-04T16:09:53+0300 lvl=dbug msg="Publication successful" logger=live user=16 channel=grafana/dashboard/uid/dtx8-Ednk
t=2021-12-04T16:09:53+0300 lvl=dbug msg="Querying for data source via SQL store" logger=datasources id=5 orgId=1
t=2021-12-04T16:09:53+0300 lvl=dbug msg="Initializing new data source instance" logger=plugins.backend pluginId=alexanderzobnin-zabbix-datasource
t=2021-12-04T16:09:53+0300 lvl=dbug msg="Zabbix request" logger=plugins.backend pluginId=alexanderzobnin-zabbix-datasource method=apiinfo.version
t=2021-12-04T16:09:53+0300 lvl=dbug msg="Got Zabbix version" logger=plugins.backend pluginId=alexanderzobnin-zabbix-datasource version=54.000
t=2021-12-04T16:09:53+0300 lvl=dbug msg="Zabbix request" logger=plugins.backend pluginId=alexanderzobnin-zabbix-datasource method=apiinfo.version
t=2021-12-04T16:09:53+0300 lvl=dbug msg="Zabbix request" logger=plugins.backend pluginId=alexanderzobnin-zabbix-datasource method=hostgroup.get
t=2021-12-04T16:09:53+0300 lvl=dbug msg="Successfully authenticated" logger=plugins.backend pluginId=alexanderzobnin-zabbix-datasource url=http://ZABBBIX_XXX/api_jsonrpc.php user=XXX
t=2021-12-04T16:09:53+0300 lvl=dbug msg="Zabbix request" logger=plugins.backend pluginId=alexanderzobnin-zabbix-datasource method=hostgroup.get
t=2021-12-04T16:09:53+0300 lvl=dbug msg="Writing result to cache" logger=plugins.backend pluginId=alexanderzobnin-zabbix-datasource method=hostgroup.get
t=2021-12-04T16:09:53+0300 lvl=dbug msg="Zabbix request" logger=plugins.backend pluginId=alexanderzobnin-zabbix-datasource method=host.get
t=2021-12-04T16:09:53+0300 lvl=dbug msg="Writing result to cache" logger=plugins.backend pluginId=alexanderzobnin-zabbix-datasource method=host.get
t=2021-12-04T16:09:53+0300 lvl=dbug msg="Zabbix request" logger=plugins.backend pluginId=alexanderzobnin-zabbix-datasource method=item.get
t=2021-12-04T16:09:59+0300 lvl=eror msg="Zabbix API request error" logger=plugins.backend pluginId=alexanderzobnin-zabbix-datasource error="request failed, status: 500 Internal Server Error"
t=2021-12-04T16:09:59+0300 lvl=eror msg="Request Completed" logger=context userId=16 orgId=1 uname=XXXXX method=POST path=/api/datasources/5/resources/zabbix-api status=500 remote_addr=XXX.XXX.XXX.XXX time_ms=5375 size=95 referer="https://grafana.XXX.ru/d/dtx8-Ednk/network-interfaces-utilization?orgId=1&editPanel=4"

Screenshots

request failed, status: 500 Internal Server Error Object status:500 statusText:"Internal Server Error" data:Object error:"Internal Server Error" message:"request failed, status: 500 Internal Server Error" config:Object url:"api/datasources/5/resources/zabbix-api" method:"POST" headers:Object hideFromInspector:false data:Object retry:0 message:"request failed, status: 500 Internal Server Error"

Software versions

Grafana	Zabbix	Grafana-Zabbix Plugin
8.2.5	5.4.8	4.2.4