Plugin Compatibility Issue with Pantheon PHP Runtime Generation 2

  • rjrahulsachinab

    (@rjrahulsachinab)


    4 months, 1 week ago

    We are using Pantheon hosting and Contact Form 7 for our site. Recently, the contact form stopped working and started showing the following error message:

    “There was an error trying to send your message. Please try again later.”

    Pantheon support confirmed that the issue is likely due to a recent plugin update being incompatible with Pantheon Runtime Generation 2. The only platform-level change in the past few days was the automatic upgrade from Runtime Gen 1 → Gen 2.

    To rule this out, Pantheon suggested temporarily switching back to Runtime Gen 1 by adding the following to pantheon.yml:

    php_runtime_generation: 1

    Reference: Pantheon Docs – PHP Runtime Generation 2

    Important Note:
    PHP Runtime Generation 1 will be removed on April 6, 2026, so it’s best to review and fix any incompatibility issues with Runtime Generation 2 now. For details on changes introduced in Gen 2, see:
    Known Changes and Requirements

    Request:
    Please update the plugin to ensure compatibility with Pantheon PHP Runtime Generation 2.

Viewing 4 replies - 1 through 4 (of 4 total)
  • Plugin Author Takayuki Miyoshi

    (@takayukister)

    4 months, 1 week ago

    Do you find any compatibility issues? If so, what exactly is it?

    Thread Starter rjrahulsachinab

    (@rjrahulsachinab)

    4 months, 1 week ago

    Hi Takayuki, I updated the plugins and tested the form. After clicking the submit button, it displayed the error message:
    “There was an error trying to send your message. Please try again later.”

    I contacted Pantheon support, and they informed me that they had previously updated the environment from Gen 1 to Gen 2 on their end. We reverted it back from Gen 2 to Gen 1, and the form started working again.

    Pantheon suggested that this is a compatibility issue and recommended reaching out to the plugin owner so they can make the necessary changes.

    Plugin Author Takayuki Miyoshi

    (@takayukister)

    4 months, 1 week ago

    Pantheon suggested that this is a compatibility issue and recommended reaching out to the plugin owner so they can make the necessary changes.

    OK, what are the “necessary changes”?

    Thread Starter rjrahulsachinab

    (@rjrahulsachinab)

    4 months, 1 week ago

    not sure what kind of changes need to be, but need compatibility with php_runtime_generation 2

Viewing 4 replies - 1 through 4 (of 4 total)

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