Hi,
Few corrections i think:
1. No comma used in eval statements for creating multiple eval fields. Reference->
https://docs.splunk.com/Documentation/SplunkCloud/7.2.6/SearchReference/Eval
2. Stats usage is | stats min(_time) as end max(_time as start by action src url. if you want to add count also,then use | stats count as "new_label" Reference-> https://docs.splunk.com/Documentation/Splunk/7.3.1/SearchReference/Stats
index=proxy src=$ip$
[|gentimes start=-1 | addinfo | eval earliest=$global_pckr.earliest$| eval latest=relative_time($global_pckr.earliest$, "+7d"]
| stats count min(_time) as end max(_time as start by action src url
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