Apache 500 when proxying URLS with %20 via mod_proxy
Solution 1:
Does adding 'nocanon' to your ProxyPass rule work?
i.e. ProxyPass /app ajp://127.0.0.1:8080/app nocanon
From the docs:
Normally, mod_proxy will canonicalise ProxyPassed URLs. But this may be incompatible with some backends, particularly those that make use of PATH_INFO. The optional nocanon keyword suppresses this, and passes the URL path "raw" to the backend. Note that may affect the security of your backend, as it removes the normal limited protection against URL-based attacks provided by the proxy.