Hi,
I mentioned this already in my previouse ticket, but we solved only the generel transport issue.
So the next problem i got is the not working telegram transport. If I trigger the “Test”-Button, libreNMS sends the test message to the chat it is configured to. But no alert were transportet 
I have already set thispermissions:
chown -R librenms:librenms /opt/librenms/storage/
chmod -R g+w /opt/librenms/storage
And I put user librenms in the group www-data
This is the output of ./scripts/test-alert.php:
SQL[SELECT `device_id` FROM `devices` WHERE `hostname` = 'adminvm.pvs-bw.de']
SQL[SELECT alerts.id, alerts.device_id, alerts.rule_id, alerts.state, alerts.note FROM alerts WHERE alerts.device_id = 74 && alerts.rule_id = 1]
SQL[SELECT alert_log.id,alert_log.rule_id,alert_log.device_id,alert_log.state,alert_log.details,alert_log.time_logged,alert_rules.rule,alert_rules.severity,alert_rules.extra,alert_rules.name,alert_rules.builder FROM alert_log,alert_rules WHERE alert_log.rule_id = alert_rules.id && alert_log.device_id = '74' && alert_log.rule_id = '1' && alert_rules.disabled = 0 ORDER BY alert_log.id DESC LIMIT 1]
SQL[SELECT DISTINCT a.* FROM alert_rules a LEFT JOIN alert_device_map d ON a.id=d.rule_id LEFT JOIN alert_group_map g ON a.id=g.rule_id LEFT JOIN device_group_device dg ON g.group_id=dg.device_group_id WHERE a.disabled = 0 AND ((d.device_id IS NULL AND g.group_id IS NULL) OR d.device_id='74' OR dg.device_id='74')]
Warning: gzuncompress(): data error in /opt/librenms/includes/alerts.inc.php on line 691
SQL[SELECT attrib_value FROM devices_attribs WHERE attrib_type = "disable_notify" && device_id = '74']
SQL[SELECT hostname, sysName, sysDescr, sysContact, os, type, ip, hardware, version, location, purpose, notes, uptime FROM devices WHERE device_id = '74']
SQL[SELECT * FROM devices_attribs WHERE `device_id` = '74']
SQL[SELECT `timestamp`, `loss`, `min`, `max`, `avg` FROM `device_perf` WHERE `device_id` = '74' ORDER BY `timestamp` LIMIT 1]
SQL[select * from `alert_templates` where exists (select * from `alert_template_map` where `alert_templates`.`id` = `alert_template_map`.`alert_templates_id` and `alert_rule_id` = ?) limit 1 ["1"] 0.33ms]
SQL[select * from `alert_templates` where `name` = ? limit 1 ["Default Alert Template"] 0.17ms]
SQL[SELECT alert_log.id,alert_log.time_logged,alert_log.details FROM alert_log WHERE alert_log.state != 2 && alert_log.state != 0 && alert_log.rule_id = '1' && alert_log.device_id = '74' && alert_log.id < '8013' ORDER BY id DESC LIMIT 1]
SQL[UPDATE `alert_log` set `details` ='<binary data>' WHERE id = '8013']
Issuing Alert-UID #8013/0: SQL[SELECT `rule_id` FROM `alerts` WHERE `id`='5244']
SQL[SELECT b.transport_id, b.transport_type FROM alert_transport_map AS a LEFT JOIN alert_transports AS b ON b.transport_id=a.transport_or_group_id WHERE a.target_type='single' AND a.rule_id='1' UNION DISTINCT SELECT d.transport_id, d.transport_type FROM alert_transport_map AS a LEFT JOIN alert_transport_groups AS b ON a.transport_or_group_id=b.transport_group_id LEFT JOIN transport_group_transport AS c ON b.transport_group_id=c.transport_group_id LEFT JOIN alert_transports AS d ON c.transport_id=d.transport_id WHERE a.target_type='group' AND a.rule_id='1']
Warning: file_put_contents(/opt/librenms/storage/framework/views/e141bc9854ae6125d3b1d27e3e3788c9): failed to open stream: Permission denied in /opt/librenms/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 122
Warning: file_put_contents(/opt/librenms/storage/framework/views/395a15bbc87b88e8696b108c335401d7): failed to open stream: Permission denied in /opt/librenms/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 122
mail => SQL[SELECT `transport_config` FROM `alert_transports` WHERE `transport_id`='2']
OKSQL[SELECT `devices`.*, `lat`, `lng` FROM `devices` LEFT JOIN locations ON `devices`.`location`=`locations`.`location` WHERE `device_id` = '74']
SQL[SELECT * FROM devices_attribs WHERE `device_id` = '74']
SQL[SELECT * FROM `vrf_lite_cisco` WHERE `device_id` = '74']
SQL[INSERT INTO `eventlog` (`host`,`device_id`,`reference`,`type`,`datetime`,`severity`,`message`,`username`) VALUES ('74','74','NULL','alert',NOW(),'1','Issued recovery for rule \'Devices up/down\' to transport \'mail\'','')]
;
Warning: file_put_contents(/opt/librenms/storage/framework/views/e141bc9854ae6125d3b1d27e3e3788c9): failed to open stream: Permission denied in /opt/librenms/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 122
Warning: file_put_contents(/opt/librenms/storage/framework/views/395a15bbc87b88e8696b108c335401d7): failed to open stream: Permission denied in /opt/librenms/vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php on line 122
telegram => SQL[SELECT `transport_config` FROM `alert_transports` WHERE `transport_id`='1']
string(21) "API '' returned Error"
string(8) "Params: "
string(147) "Return: {"ok":false,"error_code":400,"description":"Bad Request: can't parse entities: Unsupported start tag \"[email protected]\" at byte offset 400"}"
ERROR: HTTP Status code 400
SQL[INSERT INTO `eventlog` (`host`,`device_id`,`reference`,`type`,`datetime`,`severity`,`message`,`username`) VALUES ('74','74','NULL','error',NOW(),'5','Could not issue recovery for rule \'Devices up/down\' to transport \'telegram\' Error: HTTP Status code 400','')]
;
