web-panel not loaded on deploy, but appeared on localhost-environment

[bukshev]

Problem brief

I develop a simple plugin for our self-hosted Bitbucket Server. In this plugin I have a web-panel, which appeared on each Pull Request in bitbucket.web.repository.banner.

On dev-localhost environment by Atlassian all my changes works and shows correctly. But after packaging my plugin to jar and sending to our admins for installation, something strange happens: the plugin is successfully installed, merge-checks work correctly, logs from the java-code successfully come, but I don't see my web-panel (but on dev-env I always can see it).

Context

1. For web-panel I use html+css+js.
2. JS with CSS are located in HTML file in specific sections: JS in <script>, CSS in <style>.
3. So I have only the one file for this web-panel, without additional resources.
4. Bitbucket version: 7.0.1.
5. On deploy my html-velocity-view not loaded into pull-request page, so I can't see anything in JavaScript console.

atlassian-plugin.xml

<atlassian-plugin key="${atlassian.plugin.key}" name="${project.name}" plugins-version="2">

...

    <web-panel key="specific-key-for-web-panel" location="bitbucket.web.repository.banner">
        <resource name="view" type="velocity" location="/html/file-name.html"/>
        <condition class="path.ConditionFileName" />
    </web-panel>

...
   
</atlassian-plugin> 

Questions

What could be the problem?

How can I catch the problem if I do not have direct access to the server? (I have access to atlassian-bitbucket.log file only)

UPD 1 (few plugins on the server)

• We have few plugins on the server. Two of them embed content in the same place — bitbucket.web.repository.banner.
• Keys in atlassian-plugin.xml are different.
• Foreign plugin is disabled for our repository and our plugin is disabled for theirs.

UPD 2 (for the first time, everything was fine)

• During the first installation, the panel was displayed as needed.
• But after that the problems started.
• Removing the old version of the plugin before installing the new version did not help.