Why Is My Selenium InstaPy Script Throwing an \'Unknown Error: Session Deleted Due to Page Crash\' and How Can I Fix It?

Unknown Error: Session Deleted Due to Page Crash from Chrome WebDriver

When using InstaPy with Selenium, you may encounter the error "unknown error: session deleted because of page crash from unknown error: cannot determine loading status from tab crashed." This error can be frustrating and hinder the smooth execution of your scripts. Let's dive into the possible causes and solutions for this issue.

Possible Causes:

• Insufficient Resources: The headless browser used by Selenium may not have enough resources allocated, especially in a resource-constrained environment like a Docker container.
• Small /dev/shm: Some Linux systems allocate a small /dev/shm, which is used by Chrome for temporary storage. When this space runs out, it can lead to Chrome crashes and subsequent errors.
• Temporary Tab Crash: In some cases, the tab used by Selenium may crash unexpectedly, triggering the error. This can happen due to browser instability or interference from other processes.

Solutions:

• Increase Browser Resources: Allocate more RAM and CPU cores to the headless browser using Chrome options like '--memory-limit' and '--process-per-tab'.
• Enlarge /dev/shm: Increase the size of /dev/shm using the command 'sudo mount -t tmpfs -o rw,nosuid,nodev,noexec,relatime,size=512M tmpfs /dev/shm'.
• Disable Dev Shm Usage: Add the Chrome option '--disable-dev-shm-usage' to force Chrome to use /tmp instead of /dev/shm.
• Workaround for "From Tab Crashed" (Outdated): As of Chrome v65.0.3299.6, a fix for the "from tab crashed" issue has been implemented.

Additional Tips:

• Use the Latest Chrome: Ensure you're using the latest stable version of Chrome as it may contain bug fixes addressing this issue.
• Disable Extensions: Remove any unnecessary Chrome extensions that may interfere with Selenium.
• Check for Conflicting Processes: Close any other running applications or services that might consume system resources and conflict with Chrome.

By implementing these solutions, you can mitigate the "unknown error: session deleted because of page crash" issue and improve the stability of your Selenium-based scripts.

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